diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ee934f..8af56ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,17 @@ 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).
 
+## [0.21.1] - 2024-03-27
+
+### Fixed
+
+- Fix `files` pattern not handling `str` and `BytesIO`, thanks @pierremonico for input
+  (#260)
+
+### Added
+
+- Add support for `None` values in `data` pattern, thanks @slingshotvfx for issue (#259)
+
 ## [0.21.0] - 2024-03-19
 
 ### Fixed
diff --git a/respx/__version__.py b/respx/__version__.py
index 6a726d8..76f2458 100644
--- a/respx/__version__.py
+++ b/respx/__version__.py
@@ -1 +1 @@
-__version__ = "0.21.0"
+__version__ = "0.21.1"