diff --git a/package.json b/package.json
index 4ec6676..085c7b3 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,9 @@
     "mocha": "^5.2.0",
     "nock": "^10.0.6"
   },
+  "engines": {
+    "node": ">= 4.0.0"
+  },
   "homepage": "https://github.com/retailcrm/mg-bot-api-client-js#readme",
   "repository": {
     "type": "git",