diff --git a/package.json b/package.json
index eeaff1ad1..d5702adb0 100644
--- a/package.json
+++ b/package.json
@@ -23,5 +23,8 @@
     "uglify-js": "~2.2.5",
     "mocha-phantomjs": "~1.1.1",
     "glob": "~3.1.21"
+  },
+  "engines": {
+    "node": "~0.8.20"
   }
 }