diff --git a/ext/manifest.json b/ext/manifest.json
index 5f011d0d..70ce4a9a 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -28,5 +28,10 @@
         "fg/js/frame.js",
         "fg/ttf/kanji-stroke-orders.ttf",
         "fg/ttf/vl-gothic-regular.ttf"
-    ]
+    ],
+    "applications": {
+      "gecko": {
+        "id": "yomichan-gecko@example.com"
+      }
+    }
 }