diff --git a/bower.json b/bower.json
index 28d778ec..5671008e 100644
--- a/bower.json
+++ b/bower.json
@@ -3,12 +3,8 @@
   "private": true,
   "dependencies": {
     "platform": "Polymer/platform#master",
-    "x-designer": "Polymer/x-designer#master",
     "code-mirror": "Polymer/code-mirror#master",
     "github-elements": "PolymerLabs/github-elements#master",
-    "x-dom-serializer": "Polymer/x-dom-serializer#master",
-    "x-inspector": "Polymer/x-inspector#master",
-    "x-file-document": "Polymer/x-file-document#master",
     "polymer-elements": "Polymer/polymer-elements#master",
     "polymer-ui-elements": "Polymer/polymer-ui-elements#master",
     "more-elements": "Polymer/more-elements#master"