diff --git a/bower.json b/bower.json
index 122d2e9..3e9a92d 100644
--- a/bower.json
+++ b/bower.json
@@ -2,7 +2,7 @@
   "name": "core-drawer-panel",
   "private": true,
   "dependencies": {
-    "core-selector": "Polymer/core-selector#master",
-    "core-media-query": "Polymer/core-media-query#master"
+    "core-selector": "Polymer/core-selector#^0.4.0",
+    "core-media-query": "Polymer/core-media-query#^0.4.0"
   }
 }
\ No newline at end of file