diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9763b3..7c757da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Added BigEndianBitConverter
+- Added EnumUtils.GetInverseFlags
+- Added REverseLookupDictionary collection
+- Added NotifyFlagsChanged type
 
 ## [17.1.0] - 2023-03-22
 ### Changed