diff --git a/CHANGELOG.md b/CHANGELOG.md
index 327739f..37e1632 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@
 ### **Under the Hood:**
 
 - [#323](https://github.com/deltagreen-foundryvtt/delta-green-foundry-vtt-system/issues/323) - Refactored roll logic and split into util functions
+- [#233](https://github.com/deltagreen-foundryvtt/delta-green-foundry-vtt-system/issues/233) - Refactored CSS to Sass
 
 ## Version 1.6.6 - 2026-04-15