diff --git a/package.json b/package.json
index 50e4d4d09..e0b4904ca 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "atom",
   "productName": "Atom",
-  "version": "1.4.0-dev",
+  "version": "1.5.0-dev",
   "description": "A hackable text editor for the 21st Century.",
   "main": "./src/browser/main.js",
   "repository": {