diff --git a/package.json b/package.json
index 7b1d2e8..a127ca9 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,9 @@
   "scripts": {
     "test": "grunt"
   },
+  "engines": {
+    "node": ">=4.0.0"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/kraman/loopback-connector-remotekr.git"