diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9b25a5..08aac68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 ## [0.5.5] UNRELEASED
 ### Added
 - DCASE2024 challenge metric set, class and functions.
+- Preprocess option in `evaluate` now accepts custom callable value.
 
 ### Changed
 - Improve metric output typing for language servers.