diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0c41d89..8c845f8e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,9 @@ 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](https://github.com/kbsali/php-redmine-api/compare/v2.3.0...v2.x)
+## [Unreleased](https://github.com/kbsali/php-redmine-api/compare/v2.4.0...v2.x)
+
+## [v2.4.0](https://github.com/kbsali/php-redmine-api/compare/v2.3.0...v2.4.0) - 2024-01-04
 
 ### Added
 
@@ -32,6 +34,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - New method `Redmine\Api\Wiki::listByProject()` to list wiki pages from a project.
 - New exception `Redmine\Exception\UnexpectedResponseException` if the Redmine server responded with an unexpected body.
 
+### Fixed
+
+- Restore BC in possible return types in `Redmine\Api\...::all()` methods
+
 ### Deprecated
 
 - `Redmine\Api\CustomField::all()` is deprecated, use `Redmine\Api\CustomField::list()` instead