diff --git a/bower.json b/bower.json
index 5a26f93..181d8bd 100644
--- a/bower.json
+++ b/bower.json
@@ -2,7 +2,7 @@
   "name": "core-iconset-svg",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#master",
-    "core-iconset": "Polymer/core-iconset#master"
+    "polymer": "Polymer/polymer#^0.4.0",
+    "core-iconset": "Polymer/core-iconset#^0.4.0"
   }
-}
+}
\ No newline at end of file