diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca39f037..a324d95d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- Code refactoring ([#1558](https://github.com/0xPolygonZero/plonky2/pull/1558))
 
 ## [0.2.2] - 2024-03-21