diff --git a/package.json b/package.json
index 4f6e354..7e9a7d2 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,9 @@
   "name": "loopback-context",
   "version": "3.0.0-alpha.1",
   "description": "Current context for LoopBack applications, based on node-continuation-local-storage",
+  "engines": {
+    "node": ">=4"
+  },
   "keywords": [
     "StrongLoop",
     "LoopBack",