diff --git a/CHANGELOG.md b/CHANGELOG.md
index f964305..74b3fef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,15 +5,21 @@ 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).
 
-## [Unreleased]
+## [1.0.1] (2023-03-29)
+
+### Changed
+
+- Switched from deprecated `set-output` command to new environment files.
 
 ## [1.0.0] (2022-07-23)
 
 ### Added
+
 - Support for summarising [Qt Test] [TAP] files.
 - Automated tests on all supported GitHub-hosted runners (`macos-*`, `ubuntu-*` and `windows-*`).
 
-[unreleased]: https://github.com/pcolby/tap-summary/compare/v1.0.0...HEAD
+[unreleased]: https://github.com/pcolby/tap-summary/compare/v1.0.1...HEAD
+[1.0.1]: https://github.com/pcolby/tap-summary/releases/tag/v1.0.1
 [1.0.0]: https://github.com/pcolby/tap-summary/releases/tag/v1.0.0
 
 [TAP]: https://testanything.org/ "Test Anything Protocol"