diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9afc64a..fd6c435 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
+### Added
+
+- Categorize counts of differences (including attributes) in a summary ([#276](https://github.com/nasa/ncompare/pull/276)) ([**@danielfromearth**](https://github.com/danielfromearth))
+
 ### Changed
 
 - Clean up docstrings, especially removing types that are already annotated in function signature ([#274](https://github.com/nasa/ncompare/issues/274)) ([**@danielfromearth**](https://github.com/danielfromearth))