diff --git a/package.json b/package.json
index 9cc09e303..07f812356 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "license": "MIT",
   "private": true,
   "main": "lodash.js",
+  "engines": { "node": ">=4.0.0" },
   "scripts": {
     "build": "npm run build:main && npm run build:fp",
     "build:fp": "node lib/fp/build-dist.js",