diff --git a/demo/webpack/package.json b/demo/webpack/package.json
index 7db18b0d01c..01a9953fdcf 100644
--- a/demo/webpack/package.json
+++ b/demo/webpack/package.json
@@ -13,6 +13,6 @@
         "webpack-cli": "^2.0.10"
     },
     "devDependencies": {
-        "webpack-dev-server": "^3.1.0"
+        "webpack-dev-server": "^4.0.0"
     }
 }