diff --git a/package.json b/package.json
index 36f4ab07..0710c7ce 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
   "keywords": [
     "IPFS"
   ],
+  "engines" : { "node" : "^4.0.0" },
   "pre-commit": [],
   "author": "David Dias <daviddias@ipfs.io>",
   "license": "MIT",