diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6130b39d..4e7421a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [3.4.0] - 2024-02-16
+
 ### Updated
 - schema.org definition to version 26.0
 
@@ -461,7 +463,8 @@ Initial release
 - View helpers for usage in Fluid templates
 
 
-[Unreleased]: https://github.com/brotkrueml/schema/compare/v3.3.0...HEAD
+[Unreleased]: https://github.com/brotkrueml/schema/compare/v3.4.0...HEAD
+[3.4.0]: https://github.com/brotkrueml/schema/compare/v3.3.0...v3.4.0
 [3.3.0]: https://github.com/brotkrueml/schema/compare/v3.2.0...v3.3.0
 [3.2.0]: https://github.com/brotkrueml/schema/compare/v3.1.0...v3.2.0
 [3.1.0]: https://github.com/brotkrueml/schema/compare/v3.0.0...v3.1.0
diff --git a/Documentation/Changelog/Index.rst b/Documentation/Changelog/Index.rst
index ef2eaf35..48f7b8e4 100644
--- a/Documentation/Changelog/Index.rst
+++ b/Documentation/Changelog/Index.rst
@@ -8,9 +8,12 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog <https://keepachangelog.com/en/1.0.0/>`_\ , and this project adheres
 to `Semantic Versioning <https://semver.org/spec/v2.0.0.html>`_.
 
-`Unreleased <https://github.com/brotkrueml/schema/compare/v3.3.0...HEAD>`_
+`Unreleased <https://github.com/brotkrueml/schema/compare/v3.4.0...HEAD>`_
 ------------------------------------------------------------------------------
 
+`3.4.0 <https://github.com/brotkrueml/schema/compare/v3.3.0...v3.4.0>`_ - 2024-02-16
+----------------------------------------------------------------------------------------
+
 Updated
 ^^^^^^^
 
diff --git a/Documentation/Settings.cfg b/Documentation/Settings.cfg
index 2e5eacd5..b1a3c0e0 100644
--- a/Documentation/Settings.cfg
+++ b/Documentation/Settings.cfg
@@ -5,7 +5,7 @@
 
 project = schema
 version = 3.4
-release = 3.4.0-dev
+release = 3.4.0
 copyright = since 2019 by Chris Müller
 
 [html_theme_options]
diff --git a/ext_emconf.php b/ext_emconf.php
index 378e0837..71b07862 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -8,7 +8,7 @@
     'clearCacheOnLoad' => true,
     'author' => 'Chris Müller',
     'author_email' => 'typo3@krue.ml',
-    'version' => '3.4.0-dev',
+    'version' => '3.4.0',
     'constraints' => [
         'depends' => [
             'php' => '8.1.0-0.0.0',