diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2a53727..6c7332fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ 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).
 
 
+## [13.9.4] - 2024-11-01
+
+### Changed
+
+- Optimizations to cell_len which may speed up Rich / Textual output https://github.com/Textualize/rich/pull/3546
+
 ## [13.9.3] - 2024-10-22
 
 ### Fixed
@@ -2104,6 +2110,7 @@ Major version bump for a breaking change to `Text.stylize signature`, which corr
 
 - First official release, API still to be stabilized
 
+[13.9.4]: https://github.com/textualize/rich/compare/v13.9.3...v13.9.4
 [13.9.3]: https://github.com/textualize/rich/compare/v13.9.2...v13.9.3
 [13.9.2]: https://github.com/textualize/rich/compare/v13.9.1...v13.9.2
 [13.9.1]: https://github.com/textualize/rich/compare/v13.9.0...v13.9.1
diff --git a/pyproject.toml b/pyproject.toml
index 70123285..e0aafdc9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 name = "rich"
 homepage = "https://github.com/Textualize/rich"
 documentation = "https://rich.readthedocs.io/en/latest/"
-version = "13.9.3"
+version = "13.9.4"
 description = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
 authors = ["Will McGugan <willmcgugan@gmail.com>"]
 license = "MIT"