diff --git a/packages/@vuepress/core/package.json b/packages/@vuepress/core/package.json
index 37866af2..c66190c3 100644
--- a/packages/@vuepress/core/package.json
+++ b/packages/@vuepress/core/package.json
@@ -58,7 +58,7 @@
     "vuepress-plugin-container": "^2.0.2",
     "webpack": "^4.8.1",
     "webpack-chain": "^6.0.0",
-    "webpack-dev-server": "^3.5.1",
+    "webpack-dev-server": "^4.9.0",
     "webpack-merge": "^4.1.2",
     "webpackbar": "3.2.0"
   },