diff --git a/package.json b/package.json
index f2e56a5..af10109 100644
--- a/package.json
+++ b/package.json
@@ -36,5 +36,9 @@
     "istanbul": "^0.4.5",
     "mocha": "^3.0.2",
     "mocha-lcov-reporter": "^1.2.0"
+  },
+  "engines": {
+    "node": ">=6",
+    "npm": ">=3"
   }
 }