## [Unreleased]
+## [3.1.21] - 2024-02-22
+
+### Fixed
+
+- Fix null exception regression: [#1496](https://github.com/poolifier/poolifier/issues/1496).
+
+## [3.1.20] - 2024-02-11
+
+### Fixed
+
+- Ensure `worker_threads` workers are unreferenced at termination.
+
+## [3.1.19] - 2024-01-16
+
### Fixed
- Fix possible null exception at task finishing handling.