diff --git a/CHANGELOG.md b/CHANGELOG.md
index 37ccc9d6b5..008754d82c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 
 ### Fixed
 - fix some emojis not getting larger in emoji only messages
+- add missing languages to supported languages in appx manifest
 
 <a id="1_36_4"></a>
 
diff --git a/build/gen-electron-builder-config.js b/build/gen-electron-builder-config.js
index 9a852ab09f..e4a6eac2a1 100644
--- a/build/gen-electron-builder-config.js
+++ b/build/gen-electron-builder-config.js
@@ -57,7 +57,7 @@ build['mac'] = {
   extendInfo: {
     NSCameraUsageDescription: 'For scanning qr codes.',
     // NSMicrophoneUsageDescription: "For voice messages",
-    ITSAppUsesNonExemptEncryption: false
+    ITSAppUsesNonExemptEncryption: false,
   },
   gatekeeperAssess: true,
   hardenedRuntime: true,
@@ -109,6 +109,51 @@ build['appx'] = {
   publisher: 'CN=C13753E5-D590-467C-9FCA-6799E1A5EC1E',
   publisherDisplayName: 'merlinux',
   identityName: 'merlinux.DeltaChat',
+  // supported languages are on https://learn.microsoft.com/en-us/windows/apps/publish/publish-your-app/supported-languages?pivots=store-installer-msix
+  languages: [
+    'ar',
+    'az',
+    'bg',
+    'ca',
+    'cs',
+    // 'ckb', not supported by ms-store
+    'da',
+    'de',
+    'en',
+    'el',
+    // 'eo',  not supported by ms-store
+    'es',
+    'eu',
+    'fa',
+    'fi',
+    'fr',
+    'gl',
+    'hr',
+    'hu',
+    'id',
+    'it',
+    'ja-jp',
+    'km',
+    'ko',
+    'lt',
+    'nb',
+    'nl-nl',
+    'pl',
+    'pt',
+    'pt-BR',
+    'ru',
+    // 'sc', not supported by ms-store
+    'sk',
+    'sq',
+    'sr',
+    'sv',
+    'ta',
+    'te',
+    'tr',
+    'uk',
+    'zh-cn',
+    'zh-tw',
+  ],
 }
 
 // see https://www.electron.build/configuration/nsis
diff --git a/electron-builder.json5 b/electron-builder.json5
index 686160f06e..449cf7b78b 100644
--- a/electron-builder.json5
+++ b/electron-builder.json5
@@ -759,6 +759,47 @@
     publisher: 'CN=C13753E5-D590-467C-9FCA-6799E1A5EC1E',
     publisherDisplayName: 'merlinux',
     identityName: 'merlinux.DeltaChat',
+    languages: [
+      'ar',
+      'az',
+      'bg',
+      'ca',
+      'cs',
+      'da',
+      'de',
+      'en',
+      'el',
+      'es',
+      'eu',
+      'fa',
+      'fi',
+      'fr',
+      'gl',
+      'hr',
+      'hu',
+      'id',
+      'it',
+      'ja-jp',
+      'km',
+      'ko',
+      'lt',
+      'nb',
+      'nl-nl',
+      'pl',
+      'pt',
+      'pt-BR',
+      'ru',
+      'sk',
+      'sq',
+      'sr',
+      'sv',
+      'ta',
+      'te',
+      'tr',
+      'uk',
+      'zh-cn',
+      'zh-tw',
+    ],
   },
   nsis: { oneClick: false, allowToChangeInstallationDirectory: false },
 }