diff --git a/demo/reduxok/package.json b/demo/reduxok/package.json
index 7083b7735..39f878d71 100644
--- a/demo/reduxok/package.json
+++ b/demo/reduxok/package.json
@@ -13,7 +13,7 @@
     "web-vitals": "^2.1.4"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "set PORT=9001 && react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"