diff --git a/electron-builder.json5 b/electron-builder.json5
index 0a7520545..13c1cb2c5 100644
--- a/electron-builder.json5
+++ b/electron-builder.json5
@@ -210,7 +210,26 @@
     "displayName": "OpenScreen",
     "backgroundColor": "transparent",
     "capabilities": ["runFullTrust", "microphone", "webcam"],
-    "languages": ["en-US", "fr-FR"],
+    // Mirrors SUPPORTED_LOCALES in src/i18n/config.ts. This list is what the Store
+    // shows as "supported languages" on the product page and what lets the listing
+    // surface in each language's Store search — declaring only en-US/fr-FR advertised
+    // 2 of the 13 languages the app actually ships. Bare tags (ar, es, ...) match every
+    // region of that language, which is what the renderer's locale resolution does too.
+    "languages": [
+      "en-US",
+      "fr-FR",
+      "ar",
+      "es",
+      "it",
+      "ja-JP",
+      "ko-KR",
+      "pt-BR",
+      "ru",
+      "tr",
+      "vi",
+      "zh-CN",
+      "zh-TW"
+    ],
     "showNameOnTiles": true
   }
 }