diff --git a/package.json b/package.json
index 0498cc1..ebb90d1 100644
--- a/package.json
+++ b/package.json
@@ -10,5 +10,8 @@
   "license": "ISC",
   "devDependencies": {
     "node-static": "^0.7.10"
+  },
+  "engines": {
+    "node": ">= 0.4.1"
   }
 }