diff --git a/package.json b/package.json
index 5daaed11a3..b02a7ea96b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "angular",
-  "version": "2.0.0-alpha.39",
+  "version": "2.0.0-alpha.40",
   "branchPattern": "2.0.*",
   "description": "Angular 2 - a web framework for modern web apps",
   "homepage": "https://github.com/angular/angular",