diff --git a/src/manifest.json b/src/manifest.json
index 86d0ac8..0d0f852 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -2,6 +2,9 @@
   "name": "Crypto Tab",
   "description": "Replace the New Tab page with Bitcoin price chart",
   "version": "1.1.0",
+  "browser_specific_settings": {
+    "gecko": { "id": "{904ad0ba-0f9e-4b2d-a868-a467138ba9df}" }
+  },
   "icons": {
     "16": "icons/icon16.png",
     "48": "icons/icon48.png",