diff --git a/bower.json b/bower.json
index 9932a73..e463c73 100644
--- a/bower.json
+++ b/bower.json
@@ -2,7 +2,8 @@
   "name": "paper-spinner",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#master",
-    "webcomponentsjs": "Polymer/webcomponentsjs#master"
-  }
-}
+    "polymer": "Polymer/polymer#^0.5.0",
+    "webcomponentsjs": "Polymer/webcomponentsjs#^0.5.0"
+  },
+  "version": "0.5.1"
+}
\ No newline at end of file