diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index a1ee438..bd4c20f 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -13,7 +13,7 @@
 
 return (new PhpCsFixer\Config())
     ->setRules([
-        '@PSR2' => true,
+        '@PSR12' => true,
     ])
     ->setFinder($finder)
     ;
diff --git a/composer.json b/composer.json
index fe0b8a5..32134ea 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "bnomei/kirby3-security-headers",
   "type": "kirby-plugin",
-  "version": "2.5.3",
+  "version": "2.5.4",
   "license": "MIT",
   "description": "Kirby 3 Plugin for easier Security Headers setup",
   "authors": [
@@ -32,10 +32,13 @@
   },
   "config": {
     "optimize-autoloader": true,
-    "sort-packages": true
+    "sort-packages": true,
+    "allow-plugins": {
+      "getkirby/composer-installer": true
+    }
   },
   "require": {
-    "php": ">=7.3.0",
+    "php": ">=7.4.0",
     "getkirby/composer-installer": "^1.2",
     "paragonie/csp-builder": "^2.5"
   },
diff --git a/composer.lock b/composer.lock
index 623f197..3f153f0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f049512d0c104227e15346efec5e279b",
+    "content-hash": "e2a42d4a13dd9ac2cba473361dc66748",
     "packages": [
         {
             "name": "getkirby/composer-installer",
@@ -284,29 +284,30 @@
         },
         {
             "name": "doctrine/instantiator",
-            "version": "1.4.0",
+            "version": "1.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b"
+                "reference": "10dcfce151b967d20fde1b34ae6640712c3891bc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/doctrine/instantiator/zipball/d56bf6102915de5702778fe20f2de3b2fe570b5b",
-                "reference": "d56bf6102915de5702778fe20f2de3b2fe570b5b",
+                "url": "https://github.com/gitapi/repos/doctrine/instantiator/zipball/10dcfce151b967d20fde1b34ae6640712c3891bc",
+                "reference": "10dcfce151b967d20fde1b34ae6640712c3891bc",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^8.0",
+                "doctrine/coding-standard": "^9",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpbench/phpbench": "^0.13 || 1.0.0-alpha2",
-                "phpstan/phpstan": "^0.12",
-                "phpstan/phpstan-phpunit": "^0.12",
-                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
+                "phpbench/phpbench": "^0.16 || ^1",
+                "phpstan/phpstan": "^1.4",
+                "phpstan/phpstan-phpunit": "^1",
+                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
+                "vimeo/psalm": "^4.22"
             },
             "type": "library",
             "autoload": {
@@ -333,7 +334,7 @@
             ],
             "support": {
                 "issues": "https://github.com/doctrine/instantiator/issues",
-                "source": "https://github.com/doctrine/instantiator/tree/1.4.0"
+                "source": "https://github.com/doctrine/instantiator/tree/1.4.1"
             },
             "funding": [
                 {
@@ -349,7 +350,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-11-10T18:47:58+00:00"
+            "time": "2022-03-03T08:28:38+00:00"
         },
         {
             "name": "filp/whoops",
@@ -424,16 +425,16 @@
         },
         {
             "name": "getkirby/cms",
-            "version": "3.6.2",
+            "version": "3.6.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/getkirby/kirby.git",
-                "reference": "04127160ed1ab8dc277763cd8ba4ebc5a097bc18"
+                "reference": "40d2ee98b51644b8eefa814c37f3b402a9fdb994"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/getkirby/kirby/zipball/04127160ed1ab8dc277763cd8ba4ebc5a097bc18",
-                "reference": "04127160ed1ab8dc277763cd8ba4ebc5a097bc18",
+                "url": "https://github.com/gitapi/repos/getkirby/kirby/zipball/40d2ee98b51644b8eefa814c37f3b402a9fdb994",
+                "reference": "40d2ee98b51644b8eefa814c37f3b402a9fdb994",
                 "shasum": ""
             },
             "require": {
@@ -442,13 +443,13 @@
                 "ext-mbstring": "*",
                 "filp/whoops": "2.14.5",
                 "getkirby/composer-installer": "^1.2.1",
-                "laminas/laminas-escaper": "2.9.0",
+                "laminas/laminas-escaper": "2.10.0",
                 "michelf/php-smartypants": "1.8.1",
                 "php": ">=7.4.0 <8.2.0",
-                "phpmailer/phpmailer": "6.5.3",
+                "phpmailer/phpmailer": "6.5.4",
                 "psr/log": "1.1.4",
-                "symfony/polyfill-intl-idn": "1.24.0",
-                "symfony/polyfill-mbstring": "1.24.0"
+                "symfony/polyfill-intl-idn": "1.25.0",
+                "symfony/polyfill-mbstring": "1.25.0"
             },
             "replace": {
                 "symfony/polyfill-php72": "*"
@@ -501,20 +502,20 @@
                     "type": "custom"
                 }
             ],
-            "time": "2022-02-01T10:26:57+00:00"
+            "time": "2022-04-19T12:49:55+00:00"
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "7.4.1",
+            "version": "7.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "ee0a041b1760e6a53d2a39c8c34115adc2af2c79"
+                "reference": "ac1ec1cd9b5624694c3a40be801d94137afb12b4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/guzzle/guzzle/zipball/ee0a041b1760e6a53d2a39c8c34115adc2af2c79",
-                "reference": "ee0a041b1760e6a53d2a39c8c34115adc2af2c79",
+                "url": "https://github.com/gitapi/repos/guzzle/guzzle/zipball/ac1ec1cd9b5624694c3a40be801d94137afb12b4",
+                "reference": "ac1ec1cd9b5624694c3a40be801d94137afb12b4",
                 "shasum": ""
             },
             "require": {
@@ -547,12 +548,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -609,7 +610,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/guzzle/issues",
-                "source": "https://github.com/guzzle/guzzle/tree/7.4.1"
+                "source": "https://github.com/guzzle/guzzle/tree/7.4.2"
             },
             "funding": [
                 {
@@ -625,7 +626,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-12-06T18:43:05+00:00"
+            "time": "2022-03-20T14:16:28+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -654,12 +655,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\Promise\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\Promise\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -713,16 +714,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.1.0",
+            "version": "2.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "089edd38f5b8abba6cb01567c2a8aaa47cec4c72"
+                "reference": "c94a94f120803a18554c1805ef2e539f8285f9a2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/guzzle/psr7/zipball/089edd38f5b8abba6cb01567c2a8aaa47cec4c72",
-                "reference": "089edd38f5b8abba6cb01567c2a8aaa47cec4c72",
+                "url": "https://github.com/gitapi/repos/guzzle/psr7/zipball/c94a94f120803a18554c1805ef2e539f8285f9a2",
+                "reference": "c94a94f120803a18554c1805ef2e539f8285f9a2",
                 "shasum": ""
             },
             "require": {
@@ -746,7 +747,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.1-dev"
+                    "dev-master": "2.2-dev"
                 }
             },
             "autoload": {
@@ -808,7 +809,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.1.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.2.1"
             },
             "funding": [
                 {
@@ -824,37 +825,37 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-10-06T17:43:30+00:00"
+            "time": "2022-03-20T21:55:58+00:00"
         },
         {
             "name": "laminas/laminas-escaper",
-            "version": "2.9.0",
+            "version": "2.10.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laminas/laminas-escaper.git",
-                "reference": "891ad70986729e20ed2e86355fcf93c9dc238a5f"
+                "reference": "58af67282db37d24e584a837a94ee55b9c7552be"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/laminas/laminas-escaper/zipball/891ad70986729e20ed2e86355fcf93c9dc238a5f",
-                "reference": "891ad70986729e20ed2e86355fcf93c9dc238a5f",
+                "url": "https://github.com/gitapi/repos/laminas/laminas-escaper/zipball/58af67282db37d24e584a837a94ee55b9c7552be",
+                "reference": "58af67282db37d24e584a837a94ee55b9c7552be",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.3 || ~8.0.0 || ~8.1.0"
+                "ext-ctype": "*",
+                "ext-mbstring": "*",
+                "php": "^7.4 || ~8.0.0 || ~8.1.0"
             },
             "conflict": {
                 "zendframework/zend-escaper": "*"
             },
             "require-dev": {
+                "infection/infection": "^0.26.6",
                 "laminas/laminas-coding-standard": "~2.3.0",
-                "phpunit/phpunit": "^9.3",
-                "psalm/plugin-phpunit": "^0.12.2",
-                "vimeo/psalm": "^3.16"
-            },
-            "suggest": {
-                "ext-iconv": "*",
-                "ext-mbstring": "*"
+                "maglnet/composer-require-checker": "^3.8.0",
+                "phpunit/phpunit": "^9.5.18",
+                "psalm/plugin-phpunit": "^0.16.1",
+                "vimeo/psalm": "^4.22.0"
             },
             "type": "library",
             "autoload": {
@@ -886,7 +887,7 @@
                     "type": "community_bridge"
                 }
             ],
-            "time": "2021-09-02T17:10:53+00:00"
+            "time": "2022-03-08T20:15:36+00:00"
         },
         {
             "name": "league/color-extractor",
@@ -1002,28 +1003,29 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.10.2",
+            "version": "1.11.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220"
+                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/myclabs/DeepCopy/zipball/776f831124e9c62e1a2c601ecc52e776d8bb7220",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220",
+                "url": "https://github.com/gitapi/repos/myclabs/DeepCopy/zipball/14daed4296fae74d9e3201d2c4925d1acb7aa614",
+                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0"
             },
-            "replace": {
-                "myclabs/deep-copy": "self.version"
+            "conflict": {
+                "doctrine/collections": "<1.6.8",
+                "doctrine/common": "<2.13.3 || >=3,<3.2.2"
             },
             "require-dev": {
-                "doctrine/collections": "^1.0",
-                "doctrine/common": "^2.6",
-                "phpunit/phpunit": "^7.1"
+                "doctrine/collections": "^1.6.8",
+                "doctrine/common": "^2.13.3 || ^3.2.2",
+                "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
             },
             "type": "library",
             "autoload": {
@@ -1048,7 +1050,7 @@
             ],
             "support": {
                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.10.2"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.0"
             },
             "funding": [
                 {
@@ -1056,7 +1058,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-11-13T09:40:50+00:00"
+            "time": "2022-03-03T13:19:32+00:00"
         },
         {
             "name": "nikic/php-parser",
@@ -1176,16 +1178,16 @@
         },
         {
             "name": "phar-io/version",
-            "version": "3.1.1",
+            "version": "3.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phar-io/version.git",
-                "reference": "15a90844ad40f127afd244c0cad228de2a80052a"
+                "reference": "4f7fd7836c6f332bb2933569e566a0d6c4cbed74"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/phar-io/version/zipball/15a90844ad40f127afd244c0cad228de2a80052a",
-                "reference": "15a90844ad40f127afd244c0cad228de2a80052a",
+                "url": "https://github.com/gitapi/repos/phar-io/version/zipball/4f7fd7836c6f332bb2933569e566a0d6c4cbed74",
+                "reference": "4f7fd7836c6f332bb2933569e566a0d6c4cbed74",
                 "shasum": ""
             },
             "require": {
@@ -1221,9 +1223,9 @@
             "description": "Library for handling version information and constraints",
             "support": {
                 "issues": "https://github.com/phar-io/version/issues",
-                "source": "https://github.com/phar-io/version/tree/3.1.1"
+                "source": "https://github.com/phar-io/version/tree/3.2.1"
             },
-            "time": "2022-02-07T21:56:48+00:00"
+            "time": "2022-02-21T01:04:05+00:00"
         },
         {
             "name": "php-coveralls/php-coveralls",
@@ -1420,16 +1422,16 @@
         },
         {
             "name": "phpdocumentor/type-resolver",
-            "version": "1.6.0",
+            "version": "1.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "93ebd0014cab80c4ea9f5e297ea48672f1b87706"
+                "reference": "77a32518733312af16a44300404e945338981de3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/phpDocumentor/TypeResolver/zipball/93ebd0014cab80c4ea9f5e297ea48672f1b87706",
-                "reference": "93ebd0014cab80c4ea9f5e297ea48672f1b87706",
+                "url": "https://github.com/gitapi/repos/phpDocumentor/TypeResolver/zipball/77a32518733312af16a44300404e945338981de3",
+                "reference": "77a32518733312af16a44300404e945338981de3",
                 "shasum": ""
             },
             "require": {
@@ -1464,22 +1466,22 @@
             "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
             "support": {
                 "issues": "https://github.com/phpDocumentor/TypeResolver/issues",
-                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.6.0"
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.6.1"
             },
-            "time": "2022-01-04T19:58:01+00:00"
+            "time": "2022-03-15T21:29:03+00:00"
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.5.3",
+            "version": "v6.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "baeb7cde6b60b1286912690ab0693c7789a31e71"
+                "reference": "c0d9f7dd3c2aa247ca44791e9209233829d82285"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/PHPMailer/PHPMailer/zipball/baeb7cde6b60b1286912690ab0693c7789a31e71",
-                "reference": "baeb7cde6b60b1286912690ab0693c7789a31e71",
+                "url": "https://github.com/gitapi/repos/PHPMailer/PHPMailer/zipball/c0d9f7dd3c2aa247ca44791e9209233829d82285",
+                "reference": "c0d9f7dd3c2aa247ca44791e9209233829d82285",
                 "shasum": ""
             },
             "require": {
@@ -1492,10 +1494,10 @@
                 "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
                 "doctrine/annotations": "^1.2",
                 "php-parallel-lint/php-console-highlighter": "^0.5.0",
-                "php-parallel-lint/php-parallel-lint": "^1.3",
+                "php-parallel-lint/php-parallel-lint": "^1.3.1",
                 "phpcompatibility/php-compatibility": "^9.3.5",
                 "roave/security-advisories": "dev-latest",
-                "squizlabs/php_codesniffer": "^3.6.0",
+                "squizlabs/php_codesniffer": "^3.6.2",
                 "yoast/phpunit-polyfills": "^1.0.0"
             },
             "suggest": {
@@ -1536,7 +1538,7 @@
             "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
             "support": {
                 "issues": "https://github.com/PHPMailer/PHPMailer/issues",
-                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.5.3"
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v6.5.4"
             },
             "funding": [
                 {
@@ -1544,7 +1546,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-11-25T16:34:11+00:00"
+            "time": "2022-02-17T08:19:04+00:00"
         },
         {
             "name": "phpspec/prophecy",
@@ -1615,16 +1617,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.10",
+            "version": "9.2.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687"
+                "reference": "2e9da11878c4202f97915c1cb4bb1ca318a63f5f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/sebastianbergmann/php-code-coverage/zipball/d5850aaf931743067f4bfc1ae4cbd06468400687",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687",
+                "url": "https://github.com/gitapi/repos/sebastianbergmann/php-code-coverage/zipball/2e9da11878c4202f97915c1cb4bb1ca318a63f5f",
+                "reference": "2e9da11878c4202f97915c1cb4bb1ca318a63f5f",
                 "shasum": ""
             },
             "require": {
@@ -1680,7 +1682,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.10"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.15"
             },
             "funding": [
                 {
@@ -1688,7 +1690,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-12-05T09:12:13+00:00"
+            "time": "2022-03-07T09:28:20+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -1933,16 +1935,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.13",
+            "version": "9.5.20",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743"
+                "reference": "12bc8879fb65aef2138b26fc633cb1e3620cffba"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/sebastianbergmann/phpunit/zipball/597cb647654ede35e43b137926dfdfef0fb11743",
-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743",
+                "url": "https://github.com/gitapi/repos/sebastianbergmann/phpunit/zipball/12bc8879fb65aef2138b26fc633cb1e3620cffba",
+                "reference": "12bc8879fb65aef2138b26fc633cb1e3620cffba",
                 "shasum": ""
             },
             "require": {
@@ -1958,7 +1960,7 @@
                 "phar-io/version": "^3.0.2",
                 "php": ">=7.3",
                 "phpspec/prophecy": "^1.12.1",
-                "phpunit/php-code-coverage": "^9.2.7",
+                "phpunit/php-code-coverage": "^9.2.13",
                 "phpunit/php-file-iterator": "^3.0.5",
                 "phpunit/php-invoker": "^3.1.1",
                 "phpunit/php-text-template": "^2.0.3",
@@ -1972,7 +1974,7 @@
                 "sebastian/global-state": "^5.0.1",
                 "sebastian/object-enumerator": "^4.0.3",
                 "sebastian/resource-operations": "^3.0.3",
-                "sebastian/type": "^2.3.4",
+                "sebastian/type": "^3.0",
                 "sebastian/version": "^3.0.2"
             },
             "require-dev": {
@@ -2020,7 +2022,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.13"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.20"
             },
             "funding": [
                 {
@@ -2032,7 +2034,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-01-24T07:33:35+00:00"
+            "time": "2022-04-01T12:37:26+00:00"
         },
         {
             "name": "psr/container",
@@ -2654,16 +2656,16 @@
         },
         {
             "name": "sebastian/environment",
-            "version": "5.1.3",
+            "version": "5.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "388b6ced16caa751030f6a69e588299fa09200ac"
+                "reference": "1b5dff7bb151a4db11d49d90e5408e4e938270f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/sebastianbergmann/environment/zipball/388b6ced16caa751030f6a69e588299fa09200ac",
-                "reference": "388b6ced16caa751030f6a69e588299fa09200ac",
+                "url": "https://github.com/gitapi/repos/sebastianbergmann/environment/zipball/1b5dff7bb151a4db11d49d90e5408e4e938270f7",
+                "reference": "1b5dff7bb151a4db11d49d90e5408e4e938270f7",
                 "shasum": ""
             },
             "require": {
@@ -2705,7 +2707,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/environment/issues",
-                "source": "https://github.com/sebastianbergmann/environment/tree/5.1.3"
+                "source": "https://github.com/sebastianbergmann/environment/tree/5.1.4"
             },
             "funding": [
                 {
@@ -2713,7 +2715,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-09-28T05:52:38+00:00"
+            "time": "2022-04-03T09:37:03+00:00"
         },
         {
             "name": "sebastian/exporter",
@@ -2794,16 +2796,16 @@
         },
         {
             "name": "sebastian/global-state",
-            "version": "5.0.4",
+            "version": "5.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "19c519631c5a511b7ed0ad64a6713fdb3fd25fe4"
+                "reference": "0ca8db5a5fc9c8646244e629625ac486fa286bf2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/sebastianbergmann/global-state/zipball/19c519631c5a511b7ed0ad64a6713fdb3fd25fe4",
-                "reference": "19c519631c5a511b7ed0ad64a6713fdb3fd25fe4",
+                "url": "https://github.com/gitapi/repos/sebastianbergmann/global-state/zipball/0ca8db5a5fc9c8646244e629625ac486fa286bf2",
+                "reference": "0ca8db5a5fc9c8646244e629625ac486fa286bf2",
                 "shasum": ""
             },
             "require": {
@@ -2846,7 +2848,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/global-state/issues",
-                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.4"
+                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.5"
             },
             "funding": [
                 {
@@ -2854,7 +2856,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-02-10T07:01:19+00:00"
+            "time": "2022-02-14T08:28:10+00:00"
         },
         {
             "name": "sebastian/lines-of-code",
@@ -3145,28 +3147,28 @@
         },
         {
             "name": "sebastian/type",
-            "version": "2.3.4",
+            "version": "3.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/type.git",
-                "reference": "b8cd8a1c753c90bc1a0f5372170e3e489136f914"
+                "reference": "b233b84bc4465aff7b57cf1c4bc75c86d00d6dad"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/sebastianbergmann/type/zipball/b8cd8a1c753c90bc1a0f5372170e3e489136f914",
-                "reference": "b8cd8a1c753c90bc1a0f5372170e3e489136f914",
+                "url": "https://github.com/gitapi/repos/sebastianbergmann/type/zipball/b233b84bc4465aff7b57cf1c4bc75c86d00d6dad",
+                "reference": "b233b84bc4465aff7b57cf1c4bc75c86d00d6dad",
                 "shasum": ""
             },
             "require": {
                 "php": ">=7.3"
             },
             "require-dev": {
-                "phpunit/phpunit": "^9.3"
+                "phpunit/phpunit": "^9.5"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.3-dev"
+                    "dev-master": "3.0-dev"
                 }
             },
             "autoload": {
@@ -3189,7 +3191,7 @@
             "homepage": "https://github.com/sebastianbergmann/type",
             "support": {
                 "issues": "https://github.com/sebastianbergmann/type/issues",
-                "source": "https://github.com/sebastianbergmann/type/tree/2.3.4"
+                "source": "https://github.com/sebastianbergmann/type/tree/3.0.0"
             },
             "funding": [
                 {
@@ -3197,7 +3199,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-06-15T12:49:02+00:00"
+            "time": "2022-03-15T09:54:48+00:00"
         },
         {
             "name": "sebastian/version",
@@ -3254,16 +3256,16 @@
         },
         {
             "name": "symfony/config",
-            "version": "v6.0.3",
+            "version": "v6.0.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/config.git",
-                "reference": "c14f32ae4cd2a3c29d8825c5093463ac08ade7d8"
+                "reference": "22850bfdd2b6090568ad05dece6843c859d933b7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/config/zipball/c14f32ae4cd2a3c29d8825c5093463ac08ade7d8",
-                "reference": "c14f32ae4cd2a3c29d8825c5093463ac08ade7d8",
+                "url": "https://github.com/gitapi/repos/symfony/config/zipball/22850bfdd2b6090568ad05dece6843c859d933b7",
+                "reference": "22850bfdd2b6090568ad05dece6843c859d933b7",
                 "shasum": ""
             },
             "require": {
@@ -3312,7 +3314,7 @@
             "description": "Helps you find, load, combine, autofill and validate configuration values of any kind",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/config/tree/v6.0.3"
+                "source": "https://github.com/symfony/config/tree/v6.0.7"
             },
             "funding": [
                 {
@@ -3328,20 +3330,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-03T09:53:43+00:00"
+            "time": "2022-03-22T16:12:04+00:00"
         },
         {
             "name": "symfony/console",
-            "version": "v6.0.3",
+            "version": "v6.0.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "22e8efd019c3270c4f79376234a3f8752cd25490"
+                "reference": "70dcf7b2ca2ea08ad6ebcc475f104a024fb5632e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/console/zipball/22e8efd019c3270c4f79376234a3f8752cd25490",
-                "reference": "22e8efd019c3270c4f79376234a3f8752cd25490",
+                "url": "https://github.com/gitapi/repos/symfony/console/zipball/70dcf7b2ca2ea08ad6ebcc475f104a024fb5632e",
+                "reference": "70dcf7b2ca2ea08ad6ebcc475f104a024fb5632e",
                 "shasum": ""
             },
             "require": {
@@ -3407,7 +3409,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v6.0.3"
+                "source": "https://github.com/symfony/console/tree/v6.0.7"
             },
             "funding": [
                 {
@@ -3423,20 +3425,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-26T17:23:29+00:00"
+            "time": "2022-03-31T17:18:25+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
-            "version": "v3.0.0",
+            "version": "v3.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/deprecation-contracts.git",
-                "reference": "c726b64c1ccfe2896cb7df2e1331c357ad1c8ced"
+                "reference": "26954b3d62a6c5fd0ea8a2a00c0353a14978d05c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/deprecation-contracts/zipball/c726b64c1ccfe2896cb7df2e1331c357ad1c8ced",
-                "reference": "c726b64c1ccfe2896cb7df2e1331c357ad1c8ced",
+                "url": "https://github.com/gitapi/repos/symfony/deprecation-contracts/zipball/26954b3d62a6c5fd0ea8a2a00c0353a14978d05c",
+                "reference": "26954b3d62a6c5fd0ea8a2a00c0353a14978d05c",
                 "shasum": ""
             },
             "require": {
@@ -3474,7 +3476,7 @@
             "description": "A generic function and convention to trigger deprecation notices",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/deprecation-contracts/tree/v3.0.0"
+                "source": "https://github.com/symfony/deprecation-contracts/tree/v3.0.1"
             },
             "funding": [
                 {
@@ -3490,20 +3492,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-11-01T23:48:49+00:00"
+            "time": "2022-01-02T09:55:41+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v6.0.3",
+            "version": "v6.0.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "6ae49c4fda17322171a2b8dc5f70bc6edbc498e1"
+                "reference": "6c9e4c41f2c51dfde3db298594ed9cba55dbf5ff"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/filesystem/zipball/6ae49c4fda17322171a2b8dc5f70bc6edbc498e1",
-                "reference": "6ae49c4fda17322171a2b8dc5f70bc6edbc498e1",
+                "url": "https://github.com/gitapi/repos/symfony/filesystem/zipball/6c9e4c41f2c51dfde3db298594ed9cba55dbf5ff",
+                "reference": "6c9e4c41f2c51dfde3db298594ed9cba55dbf5ff",
                 "shasum": ""
             },
             "require": {
@@ -3537,7 +3539,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v6.0.3"
+                "source": "https://github.com/symfony/filesystem/tree/v6.0.7"
             },
             "funding": [
                 {
@@ -3553,11 +3555,11 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-02T09:55:41+00:00"
+            "time": "2022-04-01T12:54:51+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
@@ -3589,12 +3591,12 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3619,7 +3621,7 @@
                 "portable"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -3639,7 +3641,7 @@
         },
         {
             "name": "symfony/polyfill-intl-grapheme",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-grapheme.git",
@@ -3700,7 +3702,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-intl-grapheme/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-intl-grapheme/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -3720,7 +3722,7 @@
         },
         {
             "name": "symfony/polyfill-intl-idn",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-idn.git",
@@ -3787,7 +3789,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-intl-idn/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-intl-idn/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -3807,7 +3809,7 @@
         },
         {
             "name": "symfony/polyfill-intl-normalizer",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
@@ -3871,7 +3873,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-intl-normalizer/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-intl-normalizer/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -3891,7 +3893,7 @@
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
@@ -3954,7 +3956,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -3974,7 +3976,7 @@
         },
         {
             "name": "symfony/polyfill-php81",
-            "version": "v1.24.0",
+            "version": "v1.25.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php81.git",
@@ -4033,7 +4035,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-php81/tree/v1.24.0"
+                "source": "https://github.com/symfony/polyfill-php81/tree/v1.25.0"
             },
             "funding": [
                 {
@@ -4053,16 +4055,16 @@
         },
         {
             "name": "symfony/service-contracts",
-            "version": "v3.0.0",
+            "version": "v3.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/service-contracts.git",
-                "reference": "36715ebf9fb9db73db0cb24263c79077c6fe8603"
+                "reference": "e517458f278c2131ca9f262f8fbaf01410f2c65c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/service-contracts/zipball/36715ebf9fb9db73db0cb24263c79077c6fe8603",
-                "reference": "36715ebf9fb9db73db0cb24263c79077c6fe8603",
+                "url": "https://github.com/gitapi/repos/symfony/service-contracts/zipball/e517458f278c2131ca9f262f8fbaf01410f2c65c",
+                "reference": "e517458f278c2131ca9f262f8fbaf01410f2c65c",
                 "shasum": ""
             },
             "require": {
@@ -4115,7 +4117,7 @@
                 "standards"
             ],
             "support": {
-                "source": "https://github.com/symfony/service-contracts/tree/v3.0.0"
+                "source": "https://github.com/symfony/service-contracts/tree/v3.0.1"
             },
             "funding": [
                 {
@@ -4131,20 +4133,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-11-04T17:53:12+00:00"
+            "time": "2022-03-13T20:10:05+00:00"
         },
         {
             "name": "symfony/stopwatch",
-            "version": "v6.0.3",
+            "version": "v6.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "6835045bb9f00fa4486ea4f1bcaf623be761556f"
+                "reference": "f2c1780607ec6502f2121d9729fd8150a655d337"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://github.com/gitapi/repos/symfony/stopwatch/zipball/6835045bb9f00fa4486ea4f1bcaf623be761556f",
-                "reference": "6835045bb9f00fa4486ea4f1bcaf623be761556f",
+                "url": "https://github.com/gitapi/repos/symfony/stopwatch/zipball/f2c1780607ec6502f2121d9729fd8150a655d337",
+                "reference": "f2c1780607ec6502f2121d9729fd8150a655d337",
                 "shasum": ""
             },
             "require": {
@@ -4177,7 +4179,7 @@
             "description": "Provides a way to profile code",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/stopwatch/tree/v6.0.3"
+                "source": "https://github.com/symfony/stopwatch/tree/v6.0.5"
             },
             "funding": [
                 {
@@ -4193,7 +4195,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-02T09:55:41+00:00"
+            "time": "2022-02-21T17:15:17+00:00"
         },
         {
             "name": "symfony/string",
@@ -4227,12 +4229,12 @@
             },
             "type": "library",
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\String\\": ""
-                },
                 "files": [
                     "Resources/functions.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Component\\String\\": ""
+                },
                 "exclude-from-classmap": [
                     "/Tests/"
                 ]
@@ -4472,5 +4474,5 @@
         "php": ">=7.3.0"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.3.0"
 }
diff --git a/tests/SecurityheadersTest.php b/tests/SecurityheadersTest.php
index 9fa6ef6..25da311 100644
--- a/tests/SecurityheadersTest.php
+++ b/tests/SecurityheadersTest.php
@@ -50,7 +50,7 @@ public function testOptions()
         $this->assertIsArray($sec->option());
         $this->assertCount(8, $sec->option());
 
-        $this->assertNull($sec->option('debug'));
+        $this->assertTrue($sec->option('debug')); // config "force"
 
         $sec = new Bnomei\SecurityHeaders([
             'debug' => true,
@@ -139,7 +139,7 @@ public function testForceEnabled()
     public function testSendHeadersCSPOnly()
     {
         $sec = new Bnomei\SecurityHeaders([
-            'enabled' => true, // force against localhost check
+            'enabled' => 'force', // force against localhost check
             'headers' => [], // no default headers to test covage from sendCSPHeader
         ]);
         $sec->load();
@@ -152,7 +152,7 @@ public function testSendHeadersCSPOnly()
     public function testSendHeadersFull()
     {
         $sec = new Bnomei\SecurityHeaders([
-            'enabled' => true, // force against localhost check
+            'enabled' => 'force', // force against localhost check
         ]);
         $sec->load();
         $this->expectExceptionMessageMatches(
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 992e89d..7502ed9 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -1,4 +1,6 @@
-<?php require_once __DIR__ . '/bootstrap.php';
+<?php
+
+require_once __DIR__ . '/bootstrap.php';
 
 $kirby = new Kirby();
 
diff --git a/tests/index.php b/tests/index.php
index c3a13fd..5039cae 100644
--- a/tests/index.php
+++ b/tests/index.php
@@ -1,4 +1,5 @@
 <?php
+
 require '../vendor/autoload.php';
 
-echo (new Kirby)->render();
+echo (new Kirby())->render();
diff --git a/tests/site/config/config.php b/tests/site/config/config.php
index 9197bfd..d2aaad0 100644
--- a/tests/site/config/config.php
+++ b/tests/site/config/config.php
@@ -1,10 +1,10 @@
-<?php
-
-return [
-    'debug' => true,
-    'bnomei.securityheaders.enabled' => 'force', // force even on http localhost
-
-    'bnomei.securityheaders.loader' => function () {
-        return kirby()->roots()->site() . '/loader-test.json';
-    },
-];
+<?php
+
+return [
+    'debug' => true,
+    'bnomei.securityheaders.enabled' => 'force', // force even on http localhost
+
+    'bnomei.securityheaders.loader' => function () {
+        return kirby()->roots()->site() . '/loader-test.json';
+    },
+];
diff --git a/vendor/autoload.php b/vendor/autoload.php
index dd1b954..672d41c 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitd33dc07cfed3d5f9828c77e6ab87144a::getLoader();
diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php
index 247294d..afef3fa 100644
--- a/vendor/composer/ClassLoader.php
+++ b/vendor/composer/ClassLoader.php
@@ -42,30 +42,75 @@
  */
 class ClassLoader
 {
+    /** @var ?string */
     private $vendorDir;
 
     // PSR-4
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<string, int>>
+     */
     private $prefixLengthsPsr4 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<int, string>>
+     */
     private $prefixDirsPsr4 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, string>
+     */
     private $fallbackDirsPsr4 = array();
 
     // PSR-0
+    /**
+     * @var array[]
+     * @psalm-var array<string, array<string, string[]>>
+     */
     private $prefixesPsr0 = array();
+    /**
+     * @var array[]
+     * @psalm-var array<string, string>
+     */
     private $fallbackDirsPsr0 = array();
 
+    /** @var bool */
     private $useIncludePath = false;
+
+    /**
+     * @var string[]
+     * @psalm-var array<string, string>
+     */
     private $classMap = array();
+
+    /** @var bool */
     private $classMapAuthoritative = false;
+
+    /**
+     * @var bool[]
+     * @psalm-var array<string, bool>
+     */
     private $missingClasses = array();
+
+    /** @var ?string */
     private $apcuPrefix;
 
+    /**
+     * @var self[]
+     */
     private static $registeredLoaders = array();
 
+    /**
+     * @param ?string $vendorDir
+     */
     public function __construct($vendorDir = null)
     {
         $this->vendorDir = $vendorDir;
     }
 
+    /**
+     * @return string[]
+     */
     public function getPrefixes()
     {
         if (!empty($this->prefixesPsr0)) {
@@ -75,28 +120,47 @@ public function getPrefixes()
         return array();
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, array<int, string>>
+     */
     public function getPrefixesPsr4()
     {
         return $this->prefixDirsPsr4;
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, string>
+     */
     public function getFallbackDirs()
     {
         return $this->fallbackDirsPsr0;
     }
 
+    /**
+     * @return array[]
+     * @psalm-return array<string, string>
+     */
     public function getFallbackDirsPsr4()
     {
         return $this->fallbackDirsPsr4;
     }
 
+    /**
+     * @return string[] Array of classname => path
+     * @psalm-return array<string, string>
+     */
     public function getClassMap()
     {
         return $this->classMap;
     }
 
     /**
-     * @param array $classMap Class to filename map
+     * @param string[] $classMap Class to filename map
+     * @psalm-param array<string, string> $classMap
+     *
+     * @return void
      */
     public function addClassMap(array $classMap)
     {
@@ -111,9 +175,11 @@ public function addClassMap(array $classMap)
      * Registers a set of PSR-0 directories for a given prefix, either
      * appending or prepending to the ones previously set for this prefix.
      *
-     * @param string       $prefix  The prefix
-     * @param array|string $paths   The PSR-0 root directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string          $prefix  The prefix
+     * @param string[]|string $paths   The PSR-0 root directories
+     * @param bool            $prepend Whether to prepend the directories
+     *
+     * @return void
      */
     public function add($prefix, $paths, $prepend = false)
     {
@@ -156,11 +222,13 @@ public function add($prefix, $paths, $prepend = false)
      * Registers a set of PSR-4 directories for a given namespace, either
      * appending or prepending to the ones previously set for this namespace.
      *
-     * @param string       $prefix  The prefix/namespace, with trailing '\\'
-     * @param array|string $paths   The PSR-4 base directories
-     * @param bool         $prepend Whether to prepend the directories
+     * @param string          $prefix  The prefix/namespace, with trailing '\\'
+     * @param string[]|string $paths   The PSR-4 base directories
+     * @param bool            $prepend Whether to prepend the directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function addPsr4($prefix, $paths, $prepend = false)
     {
@@ -204,8 +272,10 @@ public function addPsr4($prefix, $paths, $prepend = false)
      * Registers a set of PSR-0 directories for a given prefix,
      * replacing any others previously set for this prefix.
      *
-     * @param string       $prefix The prefix
-     * @param array|string $paths  The PSR-0 base directories
+     * @param string          $prefix The prefix
+     * @param string[]|string $paths  The PSR-0 base directories
+     *
+     * @return void
      */
     public function set($prefix, $paths)
     {
@@ -220,10 +290,12 @@ public function set($prefix, $paths)
      * Registers a set of PSR-4 directories for a given namespace,
      * replacing any others previously set for this namespace.
      *
-     * @param string       $prefix The prefix/namespace, with trailing '\\'
-     * @param array|string $paths  The PSR-4 base directories
+     * @param string          $prefix The prefix/namespace, with trailing '\\'
+     * @param string[]|string $paths  The PSR-4 base directories
      *
      * @throws \InvalidArgumentException
+     *
+     * @return void
      */
     public function setPsr4($prefix, $paths)
     {
@@ -243,6 +315,8 @@ public function setPsr4($prefix, $paths)
      * Turns on searching the include path for class files.
      *
      * @param bool $useIncludePath
+     *
+     * @return void
      */
     public function setUseIncludePath($useIncludePath)
     {
@@ -265,6 +339,8 @@ public function getUseIncludePath()
      * that have not been registered with the class map.
      *
      * @param bool $classMapAuthoritative
+     *
+     * @return void
      */
     public function setClassMapAuthoritative($classMapAuthoritative)
     {
@@ -285,6 +361,8 @@ public function isClassMapAuthoritative()
      * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
      *
      * @param string|null $apcuPrefix
+     *
+     * @return void
      */
     public function setApcuPrefix($apcuPrefix)
     {
@@ -305,6 +383,8 @@ public function getApcuPrefix()
      * Registers this instance as an autoloader.
      *
      * @param bool $prepend Whether to prepend the autoloader or not
+     *
+     * @return void
      */
     public function register($prepend = false)
     {
@@ -324,6 +404,8 @@ public function register($prepend = false)
 
     /**
      * Unregisters this instance as an autoloader.
+     *
+     * @return void
      */
     public function unregister()
     {
@@ -338,7 +420,7 @@ public function unregister()
      * Loads the given class or interface.
      *
      * @param  string    $class The name of the class
-     * @return bool|null True if loaded, null otherwise
+     * @return true|null True if loaded, null otherwise
      */
     public function loadClass($class)
     {
@@ -347,6 +429,8 @@ public function loadClass($class)
 
             return true;
         }
+
+        return null;
     }
 
     /**
@@ -401,6 +485,11 @@ public static function getRegisteredLoaders()
         return self::$registeredLoaders;
     }
 
+    /**
+     * @param  string       $class
+     * @param  string       $ext
+     * @return string|false
+     */
     private function findFileWithExtension($class, $ext)
     {
         // PSR-4 lookup
@@ -472,6 +561,10 @@ private function findFileWithExtension($class, $ext)
  * Scope isolated include.
  *
  * Prevents access to $this/self from included files.
+ *
+ * @param  string $file
+ * @return void
+ * @private
  */
 function includeFile($file)
 {
diff --git a/vendor/composer/InstalledVersions.php b/vendor/composer/InstalledVersions.php
index 680f9c5..41bc143 100644
--- a/vendor/composer/InstalledVersions.php
+++ b/vendor/composer/InstalledVersions.php
@@ -1,321 +1,352 @@
 <?php
 
-
-
-
-
-
-
-
-
-
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Composer;
 
 use Composer\Autoload\ClassLoader;
 use Composer\Semver\VersionParser;
 
-
-
-
-
-
-
-
+/**
+ * This class is copied in every Composer installed project and available to all
+ *
+ * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
+ *
+ * To require its presence, you can require `composer-runtime-api ^2.0`
+ *
+ * @final
+ */
 class InstalledVersions
 {
-private static $installed = array (
-  'root' => 
-  array (
-    'pretty_version' => '2.5.2',
-    'version' => '2.5.2.0',
-    'aliases' => 
-    array (
-    ),
-    'reference' => NULL,
-    'name' => 'bnomei/kirby3-security-headers',
-  ),
-  'versions' => 
-  array (
-    'bnomei/kirby3-security-headers' => 
-    array (
-      'pretty_version' => '2.5.2',
-      'version' => '2.5.2.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => NULL,
-    ),
-    'getkirby/composer-installer' => 
-    array (
-      'pretty_version' => '1.2.1',
-      'version' => '1.2.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c98ece30bfba45be7ce457e1102d1b169d922f3d',
-    ),
-    'paragonie/constant_time_encoding' => 
-    array (
-      'pretty_version' => 'v2.5.0',
-      'version' => '2.5.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '9229e15f2e6ba772f0c55dd6986c563b937170a8',
-    ),
-    'paragonie/csp-builder' => 
-    array (
-      'pretty_version' => 'v2.6.0',
-      'version' => '2.6.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '3841889610939c7d9b0db032b611cedcdef0a729',
-    ),
-    'psr/http-message' => 
-    array (
-      'pretty_version' => '1.0.1',
-      'version' => '1.0.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'f6561bf28d520154e4b0ec72be95418abe6d9363',
-    ),
-  ),
-);
-private static $canGetVendors;
-private static $installedByVendor = array();
-
-
-
-
-
-
-
-public static function getInstalledPackages()
-{
-$packages = array();
-foreach (self::getInstalled() as $installed) {
-$packages[] = array_keys($installed['versions']);
-}
-
-if (1 === \count($packages)) {
-return $packages[0];
-}
-
-return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
-}
-
-
-
-
-
-
-
-
-
-public static function isInstalled($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (isset($installed['versions'][$packageName])) {
-return true;
-}
-}
-
-return false;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function satisfies(VersionParser $parser, $packageName, $constraint)
-{
-$constraint = $parser->parseConstraints($constraint);
-$provided = $parser->parseConstraints(self::getVersionRanges($packageName));
-
-return $provided->matches($constraint);
-}
-
-
-
-
-
-
-
-
-
-
-public static function getVersionRanges($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-$ranges = array();
-if (isset($installed['versions'][$packageName]['pretty_version'])) {
-$ranges[] = $installed['versions'][$packageName]['pretty_version'];
-}
-if (array_key_exists('aliases', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
-}
-if (array_key_exists('replaced', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
-}
-if (array_key_exists('provided', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
-}
-
-return implode(' || ', $ranges);
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getVersion($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['version'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['version'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getPrettyVersion($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['pretty_version'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['pretty_version'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getReference($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['reference'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['reference'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getRootPackage()
-{
-$installed = self::getInstalled();
-
-return $installed[0]['root'];
-}
-
-
-
-
-
-
-
-public static function getRawData()
-{
-return self::$installed;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function reload($data)
-{
-self::$installed = $data;
-self::$installedByVendor = array();
-}
-
-
-
-
-
-private static function getInstalled()
-{
-if (null === self::$canGetVendors) {
-self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
-}
-
-$installed = array();
-
-if (self::$canGetVendors) {
-foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
-if (isset(self::$installedByVendor[$vendorDir])) {
-$installed[] = self::$installedByVendor[$vendorDir];
-} elseif (is_file($vendorDir.'/composer/installed.php')) {
-$installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
-}
-}
-}
-
-$installed[] = self::$installed;
-
-return $installed;
-}
+    /**
+     * @var mixed[]|null
+     * @psalm-var array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}|array{}|null
+     */
+    private static $installed;
+
+    /**
+     * @var bool|null
+     */
+    private static $canGetVendors;
+
+    /**
+     * @var array[]
+     * @psalm-var array<string, array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
+     */
+    private static $installedByVendor = array();
+
+    /**
+     * Returns a list of all package names which are present, either by being installed, replaced or provided
+     *
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackages()
+    {
+        $packages = array();
+        foreach (self::getInstalled() as $installed) {
+            $packages[] = array_keys($installed['versions']);
+        }
+
+        if (1 === \count($packages)) {
+            return $packages[0];
+        }
+
+        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
+    }
+
+    /**
+     * Returns a list of all package names with a specific type e.g. 'library'
+     *
+     * @param  string   $type
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackagesByType($type)
+    {
+        $packagesByType = array();
+
+        foreach (self::getInstalled() as $installed) {
+            foreach ($installed['versions'] as $name => $package) {
+                if (isset($package['type']) && $package['type'] === $type) {
+                    $packagesByType[] = $name;
+                }
+            }
+        }
+
+        return $packagesByType;
+    }
+
+    /**
+     * Checks whether the given package is installed
+     *
+     * This also returns true if the package name is provided or replaced by another package
+     *
+     * @param  string $packageName
+     * @param  bool   $includeDevRequirements
+     * @return bool
+     */
+    public static function isInstalled($packageName, $includeDevRequirements = true)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (isset($installed['versions'][$packageName])) {
+                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks whether the given package satisfies a version constraint
+     *
+     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
+     *
+     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
+     *
+     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
+     * @param  string        $packageName
+     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
+     * @return bool
+     */
+    public static function satisfies(VersionParser $parser, $packageName, $constraint)
+    {
+        $constraint = $parser->parseConstraints($constraint);
+        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
+
+        return $provided->matches($constraint);
+    }
+
+    /**
+     * Returns a version constraint representing all the range(s) which are installed for a given package
+     *
+     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
+     * whether a given version of a package is installed, and not just whether it exists
+     *
+     * @param  string $packageName
+     * @return string Version constraint usable with composer/semver
+     */
+    public static function getVersionRanges($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            $ranges = array();
+            if (isset($installed['versions'][$packageName]['pretty_version'])) {
+                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
+            }
+            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
+            }
+            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
+            }
+            if (array_key_exists('provided', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
+            }
+
+            return implode(' || ', $ranges);
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getPrettyVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['pretty_version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
+     */
+    public static function getReference($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['reference'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['reference'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
+     */
+    public static function getInstallPath($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @return array
+     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}
+     */
+    public static function getRootPackage()
+    {
+        $installed = self::getInstalled();
+
+        return $installed[0]['root'];
+    }
+
+    /**
+     * Returns the raw installed.php data for custom implementations
+     *
+     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
+     * @return array[]
+     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}
+     */
+    public static function getRawData()
+    {
+        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = include __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+
+        return self::$installed;
+    }
+
+    /**
+     * Returns the raw data of all installed.php which are currently loaded for custom implementations
+     *
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
+     */
+    public static function getAllRawData()
+    {
+        return self::getInstalled();
+    }
+
+    /**
+     * Lets you reload the static array from another file
+     *
+     * This is only useful for complex integrations in which a project needs to use
+     * this class but then also needs to execute another project's autoloader in process,
+     * and wants to ensure both projects have access to their version of installed.php.
+     *
+     * A typical case would be PHPUnit, where it would need to make sure it reads all
+     * the data it needs from this class, then call reload() with
+     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
+     * the project in which it runs can then also use this class safely, without
+     * interference between PHPUnit's dependencies and the project's dependencies.
+     *
+     * @param  array[] $data A vendor/composer/installed.php data set
+     * @return void
+     *
+     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>} $data
+     */
+    public static function reload($data)
+    {
+        self::$installed = $data;
+        self::$installedByVendor = array();
+    }
+
+    /**
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string, type: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string, type?: string}>}>
+     */
+    private static function getInstalled()
+    {
+        if (null === self::$canGetVendors) {
+            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
+        }
+
+        $installed = array();
+
+        if (self::$canGetVendors) {
+            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
+                if (isset(self::$installedByVendor[$vendorDir])) {
+                    $installed[] = self::$installedByVendor[$vendorDir];
+                } elseif (is_file($vendorDir.'/composer/installed.php')) {
+                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
+                        self::$installed = $installed[count($installed) - 1];
+                    }
+                }
+            }
+        }
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = require __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+        $installed[] = self::$installed;
+
+        return $installed;
+    }
 }
diff --git a/vendor/composer/autoload_classmap.php b/vendor/composer/autoload_classmap.php
index 5bcef78..57069c8 100644
--- a/vendor/composer/autoload_classmap.php
+++ b/vendor/composer/autoload_classmap.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/vendor/composer/autoload_namespaces.php b/vendor/composer/autoload_namespaces.php
index b7fc012..15a2ff3 100644
--- a/vendor/composer/autoload_namespaces.php
+++ b/vendor/composer/autoload_namespaces.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/vendor/composer/autoload_psr4.php b/vendor/composer/autoload_psr4.php
index df767c6..78a2d49 100644
--- a/vendor/composer/autoload_psr4.php
+++ b/vendor/composer/autoload_psr4.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index ff79edd..c35fe95 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -25,30 +25,11 @@ public static function getLoader()
         require __DIR__ . '/platform_check.php';
 
         spl_autoload_register(array('ComposerAutoloaderInitd33dc07cfed3d5f9828c77e6ab87144a', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
         spl_autoload_unregister(array('ComposerAutoloaderInitd33dc07cfed3d5f9828c77e6ab87144a', 'loadClassLoader'));
 
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
-        if ($useStaticLoader) {
-            require __DIR__ . '/autoload_static.php';
-
-            call_user_func(\Composer\Autoload\ComposerStaticInitd33dc07cfed3d5f9828c77e6ab87144a::getInitializer($loader));
-        } else {
-            $map = require __DIR__ . '/autoload_namespaces.php';
-            foreach ($map as $namespace => $path) {
-                $loader->set($namespace, $path);
-            }
-
-            $map = require __DIR__ . '/autoload_psr4.php';
-            foreach ($map as $namespace => $path) {
-                $loader->setPsr4($namespace, $path);
-            }
-
-            $classMap = require __DIR__ . '/autoload_classmap.php';
-            if ($classMap) {
-                $loader->addClassMap($classMap);
-            }
-        }
+        require __DIR__ . '/autoload_static.php';
+        call_user_func(\Composer\Autoload\ComposerStaticInitd33dc07cfed3d5f9828c77e6ab87144a::getInitializer($loader));
 
         $loader->register(true);
 
diff --git a/vendor/composer/installed.php b/vendor/composer/installed.php
index 0095d16..dc80010 100644
--- a/vendor/composer/installed.php
+++ b/vendor/composer/installed.php
@@ -1,60 +1,59 @@
-<?php return array (
-  'root' => 
-  array (
-    'pretty_version' => '2.5.2',
-    'version' => '2.5.2.0',
-    'aliases' => 
-    array (
+<?php return array(
+    'root' => array(
+        'pretty_version' => '2.5.4',
+        'version' => '2.5.4.0',
+        'type' => 'kirby-plugin',
+        'install_path' => __DIR__ . '/../../',
+        'aliases' => array(),
+        'reference' => NULL,
+        'name' => 'bnomei/kirby3-security-headers',
+        'dev' => false,
     ),
-    'reference' => NULL,
-    'name' => 'bnomei/kirby3-security-headers',
-  ),
-  'versions' => 
-  array (
-    'bnomei/kirby3-security-headers' => 
-    array (
-      'pretty_version' => '2.5.2',
-      'version' => '2.5.2.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => NULL,
+    'versions' => array(
+        'bnomei/kirby3-security-headers' => array(
+            'pretty_version' => '2.5.4',
+            'version' => '2.5.4.0',
+            'type' => 'kirby-plugin',
+            'install_path' => __DIR__ . '/../../',
+            'aliases' => array(),
+            'reference' => NULL,
+            'dev_requirement' => false,
+        ),
+        'getkirby/composer-installer' => array(
+            'pretty_version' => '1.2.1',
+            'version' => '1.2.1.0',
+            'type' => 'composer-plugin',
+            'install_path' => __DIR__ . '/../getkirby/composer-installer',
+            'aliases' => array(),
+            'reference' => 'c98ece30bfba45be7ce457e1102d1b169d922f3d',
+            'dev_requirement' => false,
+        ),
+        'paragonie/constant_time_encoding' => array(
+            'pretty_version' => 'v2.5.0',
+            'version' => '2.5.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../paragonie/constant_time_encoding',
+            'aliases' => array(),
+            'reference' => '9229e15f2e6ba772f0c55dd6986c563b937170a8',
+            'dev_requirement' => false,
+        ),
+        'paragonie/csp-builder' => array(
+            'pretty_version' => 'v2.6.0',
+            'version' => '2.6.0.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../paragonie/csp-builder',
+            'aliases' => array(),
+            'reference' => '3841889610939c7d9b0db032b611cedcdef0a729',
+            'dev_requirement' => false,
+        ),
+        'psr/http-message' => array(
+            'pretty_version' => '1.0.1',
+            'version' => '1.0.1.0',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../psr/http-message',
+            'aliases' => array(),
+            'reference' => 'f6561bf28d520154e4b0ec72be95418abe6d9363',
+            'dev_requirement' => false,
+        ),
     ),
-    'getkirby/composer-installer' => 
-    array (
-      'pretty_version' => '1.2.1',
-      'version' => '1.2.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c98ece30bfba45be7ce457e1102d1b169d922f3d',
-    ),
-    'paragonie/constant_time_encoding' => 
-    array (
-      'pretty_version' => 'v2.5.0',
-      'version' => '2.5.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '9229e15f2e6ba772f0c55dd6986c563b937170a8',
-    ),
-    'paragonie/csp-builder' => 
-    array (
-      'pretty_version' => 'v2.6.0',
-      'version' => '2.6.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '3841889610939c7d9b0db032b611cedcdef0a729',
-    ),
-    'psr/http-message' => 
-    array (
-      'pretty_version' => '1.0.1',
-      'version' => '1.0.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'f6561bf28d520154e4b0ec72be95418abe6d9363',
-    ),
-  ),
 );
diff --git a/vendor/composer/platform_check.php b/vendor/composer/platform_check.php
index 92370c5..580fa96 100644
--- a/vendor/composer/platform_check.php
+++ b/vendor/composer/platform_check.php
@@ -4,8 +4,8 @@
 
 $issues = array();
 
-if (!(PHP_VERSION_ID >= 70300)) {
-    $issues[] = 'Your Composer dependencies require a PHP version ">= 7.3.0". You are running ' . PHP_VERSION . '.';
+if (!(PHP_VERSION_ID >= 70400)) {
+    $issues[] = 'Your Composer dependencies require a PHP version ">= 7.4.0". You are running ' . PHP_VERSION . '.';
 }
 
 if ($issues) {