diff --git a/package.json b/package.json
index 26f5310..4e3f2ae 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
   },
   "engines": {
     "npm": ">=1.4.28",
-    "node": ">=1.4"
+    "node": ">=4"
   },
   "files": [
     "lib",