diff --git a/bower.json b/bower.json
index b99eaaa7..f49fe085 100644
--- a/bower.json
+++ b/bower.json
@@ -7,7 +7,7 @@
     "list",
     "virtual-list"
   ],
-  "version": "1.3.15",
+  "version": "1.4.0",
   "homepage": "https://github.com/PolymerElements/iron-list",
   "authors": [
     "The Polymer Authors"