diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba30d4866b..df3f74b816 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [4.9.1](https://github.com/webpack/webpack-dev-server/compare/v4.9.0...v4.9.1) (2022-05-31)
+
+
+### Bug Fixes
+
+* security problem with sockjs ([#4465](https://github.com/webpack/webpack-dev-server/issues/4465)) ([e765182](https://github.com/webpack/webpack-dev-server/commit/e765182e426cbca9c3c09294b02ac2d9737c1d74))
+
 ## [4.9.0](https://github.com/webpack/webpack-dev-server/compare/v4.8.1...v4.9.0) (2022-05-04)
 
 
diff --git a/package-lock.json b/package-lock.json
index 1421e5e87a..e11d957601 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "webpack-dev-server",
-  "version": "4.9.0",
+  "version": "4.9.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "webpack-dev-server",
-      "version": "4.9.0",
+      "version": "4.9.1",
       "license": "MIT",
       "dependencies": {
         "@types/bonjour": "^3.5.9",
diff --git a/package.json b/package.json
index 5621d12a24..c4bccac3a7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "webpack-dev-server",
-  "version": "4.9.0",
+  "version": "4.9.1",
   "description": "Serves a webpack app. Updates the browser on changes.",
   "bin": "bin/webpack-dev-server.js",
   "main": "lib/Server.js",