diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 5824a3c..66c53e4 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -49,7 +49,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: [ '8.0', '8.1' ]
+        php-versions: [ '8.0', '8.1', '8.2', '8.3' ]
         include:
           - php-versions: 8.0
             env: COMPOSER_FLAGS="--prefer-lowest"
diff --git a/composer.json b/composer.json
index df48c39..25c7909 100644
--- a/composer.json
+++ b/composer.json
@@ -38,5 +38,11 @@
   },
   "suggest": {
     "vimeo/psalm": "Using psalm with this 'contract' will enable immutability and strong typing verification"
+  },
+  "config": {
+    "allow-plugins": {
+      "infection/extension-installer": true,
+      "phpro/grumphp": true
+    }
   }
 }
diff --git a/src/Domain/Identity/Identity.php b/src/Domain/Identity/Identity.php
index 0a051f5..eeb88ba 100644
--- a/src/Domain/Identity/Identity.php
+++ b/src/Domain/Identity/Identity.php
@@ -16,7 +16,7 @@
  * Interface Identity
  * @package JeckelLab\Contract\Domain\Identity
  * @psalm-immutable
- * @template IdentityType of int|string
+ * @template IdentityType of int|string|Stringable
  */
 interface Identity extends Equality, Stringable, JsonSerializable
 {
@@ -26,15 +26,15 @@ interface Identity extends Equality, Stringable, JsonSerializable
     public static function new(): static;
 
     /**
-     * @param int|string $identity
+     * @param int|string|Stringable $identity
      * @return static
      * @throws InvalidIdException
      */
-    public static function from(int|string $identity): static;
+    public static function from(int|string|Stringable $identity): static;
 
     /**
-     * @return int|string
+     * @return int|string|Stringable
      * @psalm-return IdentityType
      */
-    public function id(): int|string;
+    public function id(): int|string|Stringable;
 }