diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee2b0bf720f..dab561ed505 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#5117](https://github.com/thanos-io/thanos/pull/5117) Bucket replicate: Added flag `--ignore-marked-for-deletion` to avoid replication of blocks with the deletion mark.
 
 ## Changed
+- [#5145](https://github.com/thanos-io/thanos/pull/5145) UI: Remove old UI.
 - [#5119](https://github.com/thanos-io/thanos/pull/5119) UI: Optimize Target, Alert and Service Discovery page and on each of them add a search bar.
 
 ### Fixed