diff --git a/packages/react-scripts/package.json b/packages/react-scripts/package.json
index 123f966d035..d88e2c36add 100644
--- a/packages/react-scripts/package.json
+++ b/packages/react-scripts/package.json
@@ -52,8 +52,8 @@
     "style-loader": "0.18.2",
     "sw-precache-webpack-plugin": "0.11.4",
     "url-loader": "0.5.9",
-    "webpack": "3.5.1",
-    "webpack-dev-server": "2.8.2",
+    "webpack": "4.0.0",
+    "webpack-dev-server": "4.6.0",
     "webpack-manifest-plugin": "1.2.1",
     "whatwg-fetch": "2.0.3"
   },