diff --git a/CHANGELOG.md b/CHANGELOG.md
index 060d7fc..ec5eadd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -201,3 +201,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 - Untracked `__pycache__`, `build/`, and `dist/` from the git repository.
+- patch 232: perf: parallel tokenization via num_proc