diff --git a/package.json b/package.json
index eebd2f5ac0..c8c9797d4a 100644
--- a/package.json
+++ b/package.json
@@ -25,5 +25,8 @@
   },
   "scripts": {
     "test": "TESTING=1 jasmine"
+  },
+  "engines": {
+    "node": ">=4.1"
   }
 }