diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2500bf93..cb8d3c859 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [6.3.20](https://github.com/karma-runner/karma/compare/v6.3.19...v6.3.20) (2022-05-13)
+
+
+### Bug Fixes
+
+* prefer IPv4 addresses when resolving domains ([e17698f](https://github.com/karma-runner/karma/commit/e17698f950af83bf2b3edc540d2a3e1fb73cba59)), closes [#3730](https://github.com/karma-runner/karma/issues/3730)
+
 ## [6.3.19](https://github.com/karma-runner/karma/compare/v6.3.18...v6.3.19) (2022-04-19)
 
 
diff --git a/package-lock.json b/package-lock.json
index 3e2206d31..da0a5af3f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "karma",
-  "version": "6.3.19",
+  "version": "6.3.20",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 7487c353b..50789b029 100644
--- a/package.json
+++ b/package.json
@@ -29,8 +29,8 @@
     "Yaroslav Admin <devoto13@gmail.com>",
     "greenkeeperio-bot <support@greenkeeper.io>",
     "Karma Bot <karmarunnerbot@gmail.com>",
-    "Maksim Ryzhikov <rv.maksim@gmail.com>",
     "semantic-release-bot <semantic-release-bot@martynus.net>",
+    "Maksim Ryzhikov <rv.maksim@gmail.com>",
     "ukasz Usarz <lukasz.usarz@gmail.com>",
     "Christian Budde Christensen <budde377@gmail.com>",
     "Wesley Cho <wesley.cho@gmail.com>",
@@ -499,7 +499,7 @@
   "engines": {
     "node": ">= 10"
   },
-  "version": "6.3.19",
+  "version": "6.3.20",
   "license": "MIT",
   "scripts": {
     "lint": "eslint . --ext js --ignore-pattern *.tpl.js",