diff --git a/lib/utils/boot.html b/lib/utils/boot.html
index 6b8218df9e..d3e9a1094e 100644
--- a/lib/utils/boot.html
+++ b/lib/utils/boot.html
@@ -49,7 +49,7 @@
   };
   /* eslint-enable */
 
-  window.Polymer.version = '2.1.1';
+  window.Polymer.version = '2.2.0';
 
   /* eslint-disable no-unused-vars */
   /*