diff --git a/CHANGELOG.md b/CHANGELOG.md
index b404f71..1550a81 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/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.2.1](https://github.com/RReverser/serde-ndim/compare/v2.2.0...v2.2.1) - 2026-05-01
+
+### Other
+
+- Add CHANGELOG with historical releases
+- Pass GITHUB_TOKEN to release-plz
+- Use canonical release-plz/action name and enable verbose logging
+- Automate releases via release-plz with OIDC trusted publishing ([#5](https://github.com/RReverser/serde-ndim/pull/5))
+- Add support for bool arrays ([#4](https://github.com/RReverser/serde-ndim/pull/4))
+- Fix docs.rs build ([#3](https://github.com/RReverser/serde-ndim/pull/3))
+
 ## [2.2.0] - 2025-12-28
 
 ### Changed
diff --git a/Cargo.toml b/Cargo.toml
index ade84eb..cae6806 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "serde-ndim"
-version = "2.2.0"
+version = "2.2.1"
 edition = "2021"
 description = "Serde support for n-dimensional arrays from self-describing formats"
 authors = ["Ingvar Stepanyan <me@rreverser.com>"]