diff --git a/bower.json b/bower.json
index 21a8678..f3a4b8f 100644
--- a/bower.json
+++ b/bower.json
@@ -20,14 +20,13 @@
   "homepage": "https://github.com/PolymerElements/iron-collapse",
   "ignore": [],
   "dependencies": {
-    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0",
     "polymer": "Polymer/polymer#^0.9.0"
   },
   "devDependencies": {
-    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.6.0",
     "web-component-tester": "*",
     "test-fixture": "PolymerElements/test-fixture#^0.9.0",
     "iron-component-page": "PolymerElements/iron-component-page#^0.9.0",
-    "paper-styles": "PolymerElements/paper-styles#^0.9.0"
+    "paper-styles": "PolymerElements/paper-styles#^0.9.0",
+    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
   }
 }