diff --git a/package.json b/package.json
index d6e03ca..eb81516 100644
--- a/package.json
+++ b/package.json
@@ -19,5 +19,8 @@
     "build_dev": "./node_modules/.bin/webpack --config webpack.dev.js --progress --color",
     "build_prod": "./node_modules/.bin/webpack --config webpack.prod.js"
   },
+  "engines": {
+    "yarn": "4.0.1"
+  },
   "packageManager": "yarn@4.0.1"
 }