diff --git a/src/manifest.json b/src/manifest.json
index 9e57d25..8671d31 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -8,7 +8,7 @@
   },
   "content_scripts": [
     {
-      "matches": ["*://github.com/*"],
+      "matches": ["*://*.github.com/*"],
       "js": ["content.js"]
     }
   ],