diff --git a/bower.json b/bower.json
index 1dadefd..efe5de7 100644
--- a/bower.json
+++ b/bower.json
@@ -2,9 +2,9 @@
   "name": "inspector-elements",
   "private": true,
   "dependencies": {
-    "core-animation": "Polymer/core-animation#master",
-    "core-icons": "Polymer/core-icons#master",
-    "core-pages": "Polymer/core-pages#master",
-    "x-meta": "Polymer/x-meta#master"
+    "core-animation": "Polymer/core-animation#>=0.3.0 <1.0.0",
+    "core-icons": "Polymer/core-icons#>=0.3.0 <1.0.0",
+    "core-pages": "Polymer/core-pages#>=0.3.0 <1.0.0",
+    "x-meta": "Polymer/x-meta#>=0.3.0 <1.0.0"
   }
 }
\ No newline at end of file