diff --git a/CHANGELOG.md b/CHANGELOG.md
index a72eb05..745ea36 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.0.0] - 2024-01-05
+### Changed
+- Return task ARN from the handle command [#34](https://github.com/azavea/django-ecsmanage/pull/34)
+
 ## [3.0.0] - 2023-12-18
 ### Added
 - Add support for Django 3.2, 4.2, 5.0 [#33](https://github.com/azavea/django-ecsmanage/pull/33)
@@ -70,7 +74,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update PyPi credentials [#4](https://github.com/azavea/django-ecsmanage/pull/4)
 - Initialize Django module for one-off management commands [#2](https://github.com/azavea/django-ecsmanage/pull/2)
 
-[Unreleased]: https://github.com/azavea/django-ecsmanage/compare/3.0.0...HEAD
+[Unreleased]: https://github.com/azavea/django-ecsmanage/compare/4.0.0...HEAD
+[4.0.0]: https://github.com/azavea/django-ecsmanage/compare/3.0.0...4.0.0
 [3.0.0]: https://github.com/azavea/django-ecsmanage/compare/2.0.1...3.0.0
 [2.0.1]: https://github.com/azavea/django-ecsmanage/compare/2.0.0...2.0.1
 [2.0.0]: https://github.com/azavea/django-ecsmanage/compare/1.1.0...2.0.0