diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8915e5c7a..e8485a11b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### Bug fixes
+
+* Update `belongs_to` to work with composite primary keys. ([#1396])
+
+[#1396]: https://github.com/thoughtbot/shoulda-matchers/pull/1396
+
 ## 4.5.0 - 2020-12-28
 
 ### Bug fixes