diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3cd39c4..426ac8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://git.rustybever.be/vieter-v/vieter/src/branch/dev)
 
+### Changed
+
+* Cron expression parser now uses bitfields instead of bool arrays
+
 ## [0.4.0](https://git.rustybever.be/vieter-v/vieter/src/tag/0.4.0)
 
 ### Added