Updates changelog.

.github/CHANGELOG.md

@@ -4,11 +4,16 @@ 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).
 
-## [v0.4.1] - 2021-05-24
+## [v0.5.1] - 2021-05-24
 
 ### Added
 - The field `companyCategoryID` to company entities
 
+## [v0.5.0] - 2021-03-19
+
+### Fixed
+- Fields modified by Autotask without a version upgrade.
+
 ## [v0.4.0] - 2020-10-07
 
 ### Changed
@@ -109,7 +114,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Initial API client class files.
 
-[v0.4.1]: https://github.com/Anteris-Dev/autotask-client/compare/v0.4.0...v0.4.1
+[v0.5.1]: https://github.com/Anteris-Dev/autotask-client/compare/v0.5.0...v0.5.1
+[v0.5.0]: https://github.com/Anteris-Dev/autotask-client/compare/v0.4.0...v0.5.0
 [v0.4.0]: https://github.com/Anteris-Dev/autotask-client/compare/v0.3.2...v0.4.0
 [v0.3.2]: https://github.com/Anteris-Dev/autotask-client/compare/v0.3.1...v0.3.2
 [v0.3.1]: https://github.com/Anteris-Dev/autotask-client/compare/v0.3.0...v0.3.1