diff --git a/bower.json b/bower.json
index 9395e877a1..96f3735b70 100644
--- a/bower.json
+++ b/bower.json
@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "shadycss": "webcomponents/shadycss#v1.0.0-rc.1",
-    "webcomponentsjs": "v1.0.0-rc.4"
+    "webcomponentsjs": "v1.0.0-rc.5"
   },
   "devDependencies": {
     "web-component-tester": "^5",