diff --git a/bower.json b/bower.json
index e39e32c..36726af 100644
--- a/bower.json
+++ b/bower.json
@@ -29,7 +29,7 @@
     "changelog.txt"
   ],
   "dependencies": {
-    "firebase": "2.2.x"
+    "firebase": ">=2.2.0 <3.0.0"
   },
   "devDependencies": {}
 }