diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a062ac6c3..d76a2795a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unreleased
+## [6.6.0] - 2025-11-10
 
 ### Fixed
 
@@ -3191,6 +3191,7 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[6.6.0]: https://github.com/Textualize/textual/compare/v6.5.0...v6.6.0
 [6.5.0]: https://github.com/Textualize/textual/compare/v6.4.0...v6.5.0
 [6.4.0]: https://github.com/Textualize/textual/compare/v6.3.0...v6.4.0
 [6.3.0]: https://github.com/Textualize/textual/compare/v6.2.1...v6.3.0
diff --git a/pyproject.toml b/pyproject.toml
index 39f2e3c5e1..b5f10ef1d2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "6.5.0"
+version = "6.6.0"
 homepage = "https://github.com/Textualize/textual"
 repository = "https://github.com/Textualize/textual"
 documentation = "https://textual.textualize.io/"