diff --git a/packages/babel-preset-react-app/create.js b/packages/babel-preset-react-app/create.js
index 8902bfd0472..126de46ee5c 100644
--- a/packages/babel-preset-react-app/create.js
+++ b/packages/babel-preset-react-app/create.js
@@ -164,6 +164,12 @@ module.exports = function (api, opts, env) {
           loose: true,
         },
       ],
+      [
+        require('@babel/plugin-proposal-private-property-in-object').default,
+        {
+          loose: true,
+        },
+      ],
       // Adds Numeric Separators
       require('@babel/plugin-proposal-numeric-separator').default,
       // Polyfills the runtime needed for async/await, generators, and friends
diff --git a/packages/react-scripts/package.json b/packages/react-scripts/package.json
index 879e5c61996..bb392249cbc 100644
--- a/packages/react-scripts/package.json
+++ b/packages/react-scripts/package.json
@@ -71,7 +71,7 @@
     "source-map-loader": "^1.1.2",
     "style-loader": "3.0.0",
     "webpack": "5.41.1",
-    "webpack-dev-server": "4.0.0-rc.1",
+    "webpack-dev-server": "4.0.0",
     "webpack-manifest-plugin": "3.1.1",
     "workbox-webpack-plugin": "6.1.5"
   },