diff --git a/package.json b/package.json
index dbcdd407..be29e58d 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "ember-disable-prototype-extensions": "^1.1.2",
     "ember-load-initializers": "^1.0.0",
     "ember-resolver": "^4.3.0",
-    "ember-source": "~2.18.0",
+    "ember-source": "~3.0.0-beta.4",
     "eslint": "^4.2.0",
     "eslint-config-simplabs": "^0.4.0",
     "eslint-plugin-ember": "^3.6.2",