diff --git a/manifest.json b/manifest.json
index 75b2f5b..a93a6c3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -25,5 +25,10 @@
 			"64": "icon-64.png"
 		},
 		"default_popup": "dialog.html"
+	},
+	"browser_specific_settings": {
+		"gecko": {
+			"id": "{29f1556c-bde4-469f-b8de-79aac940da26}"
+		}
 	}
 }