diff --git a/bower.json b/bower.json
index 15e9b3f..56dd1f1 100644
--- a/bower.json
+++ b/bower.json
@@ -2,7 +2,7 @@
   "name": "core-layout",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#master"
+    "polymer": "Polymer/polymer#>=0.3.0 <1.0.0"
   },
   "version": "0.3.0"
-}
+}
\ No newline at end of file