diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3e1a20c1..8e4a24bbf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ 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).
 
+
+## [13.9.3] - 2024-10-22
+
+### Fixed
+
+- Fixed broken regex that may have resulted in poor performance.
+
 ## [13.9.2] - 2024-10-04
 
 ### Fixed
diff --git a/rich/cells.py b/rich/cells.py
index f85f928f7..93ecf6abc 100644
--- a/rich/cells.py
+++ b/rich/cells.py
@@ -7,7 +7,7 @@
 from ._cell_widths import CELL_WIDTHS
 
 # Regex to match sequence of the most common character ranges
-_is_single_cell_widths = re.compile("^[\u0020-\u006f\u00a0\u02ff\u0370-\u0482]*$").match
+_is_single_cell_widths = re.compile("^[\u0020-\u007f\u00a0\u02ff\u0370-\u0482]*$").match
 
 
 @lru_cache(4096)