diff --git a/package.json b/package.json
index 070eeae35f4..7a03e785402 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ember-source",
   "license": "MIT",
-  "version": "2.10.0",
+  "version": "2.10.0-alpha.1",
   "keywords": [
     "ember-addon"
   ],