diff --git a/CHANGELOG.md b/CHANGELOG.md
index 360ddec5..e2de86b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,3 +3,7 @@
 Breaking changes:
 
 * Our Minimum Supported Rust Version is now 1.36.0
+
+Improvements:
+
+* We now support [historical user IDs](https://matrix.org/docs/spec/appendices#historical-user-ids)