diff --git a/CHANGELOG.md b/CHANGELOG.md
index a208853c..9e530567 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,13 +7,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [21.1.0] - 2023-12-12
+### Changed
+- Upgrade `messages` to 24.0.0
+
 ### Fixed
 - [Ruby] Fixed up 90% of all rubocop offenses ([#270](https://github.com/cucumber/html-formatter/pull/270))
 - [Java] Fix project urls in `pom.xml`
 
-### Changed
-- Upgrade `messages` to 24.0.0
-
 ## [21.0.0] - 2023-11-14
 ### Added
 - [Ruby] CI: Test on ruby 3.1/3.2 ([#268](https://github.com/cucumber/html-formatter/pull/268))
@@ -299,7 +300,8 @@ even if there were no errors.
 ### Added
 - First release
 
-[Unreleased]: https://github.com/cucumber/html-formatter/compare/v21.0.0...HEAD
+[Unreleased]: https://github.com/cucumber/html-formatter/compare/v21.1.0...HEAD
+[21.1.0]: https://github.com/cucumber/html-formatter/compare/v21.0.0...v21.1.0
 [21.0.0]: https://github.com/cucumber/html-formatter/compare/v20.4.0...v21.0.0
 [20.4.0]: https://github.com/cucumber/html-formatter/compare/v20.3.1...v20.4.0
 [20.3.1]: https://github.com/cucumber/html-formatter/compare/v20.3.0...v20.3.1
diff --git a/java/pom.xml b/java/pom.xml
index 801cae9d..27f456f5 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -9,7 +9,7 @@
     </parent>
 
     <artifactId>html-formatter</artifactId>
-    <version>21.0.1-SNAPSHOT</version>
+    <version>21.1.0</version>
     <packaging>jar</packaging>
     <name>Cucumber HTML Formatter</name>
     <description>Renders Cucumber Messages as HTML</description>
@@ -17,14 +17,14 @@
 
     <properties>
         <project.Automatic-Module-Name>io.cucumber.htmlformatter</project.Automatic-Module-Name>
-        <project.build.outputTimestamp>1699965991</project.build.outputTimestamp>
+        <project.build.outputTimestamp>1702374644</project.build.outputTimestamp>
     </properties>
 
     <scm>
         <connection>scm:git:git://github.com/cucumber/html-formatter.git</connection>
         <developerConnection>scm:git:git@github.com:cucumber/html-formatter.git</developerConnection>
         <url>git://github.com/cucumber/html-formatter.git</url>
-        <tag>HEAD</tag>
+        <tag>v21.1.0</tag>
     </scm>
 
     <dependencyManagement>
diff --git a/javascript/package-lock.json b/javascript/package-lock.json
index a156ba33..425ed2b2 100644
--- a/javascript/package-lock.json
+++ b/javascript/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@cucumber/html-formatter",
-  "version": "21.0.0",
+  "version": "21.1.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@cucumber/html-formatter",
-      "version": "21.0.0",
+      "version": "21.1.0",
       "license": "MIT",
       "devDependencies": {
         "@babel/core": "7.23.6",
diff --git a/javascript/package.json b/javascript/package.json
index 777949d1..3c38c3b9 100644
--- a/javascript/package.json
+++ b/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cucumber/html-formatter",
-  "version": "21.0.0",
+  "version": "21.1.0",
   "description": "HTML formatter for Cucumber",
   "main": "dist/src/CucumberHtmlStream.js",
   "types": "dist/src/CucumberHtmlStream.d.ts",
diff --git a/ruby/VERSION b/ruby/VERSION
index fb5b5130..e9dbbdad 100644
--- a/ruby/VERSION
+++ b/ruby/VERSION
@@ -1 +1 @@
-21.0.0
+21.1.0