diff --git a/package.json b/package.json
index 2cd2c85..fdddcf2 100644
--- a/package.json
+++ b/package.json
@@ -8,4 +8,8 @@
     "jquery": "*",
     "xml2js": "*"
   }
+  "engines": {
+    "node": "0.8.x",
+    "npm": "1.1.x"
+  }
 }