diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04b6167..8d68a2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+- Add support for MACRAW operation mode [#33](https://github.com/kellerkindt/w5500/pull/33)
+
 ## [0.4.0] - January 22nd, 2022
 
 ### Added