diff --git a/diary-front/package.json b/diary-front/package.json
index 341ef58..384d055 100644
--- a/diary-front/package.json
+++ b/diary-front/package.json
@@ -72,7 +72,7 @@
     "url-loader": "0.6.2",
     "url-polyfill": "^1.0.13",
     "webpack": "3.8.1",
-    "webpack-dev-server": "2.9.4",
+    "webpack-dev-server": "5.2.1",
     "webpack-manifest-plugin": "1.3.2",
     "whatwg-fetch": "2.0.3"
   },