diff --git a/package.json b/package.json
index f2648845e13..035730ff4e0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ember-source",
-  "version": "3.9.0",
+  "version": "3.9.0-beta.1",
   "description": "A JavaScript framework for creating ambitious web applications",
   "keywords": [
     "ember-addon"