diff --git a/CHANGELOG.md b/CHANGELOG.md
index 875784f48..ca153608b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.15.4. [#2016](https://github.com/github/codeql-action/pull/2016)
 
 ## 2.22.8 - 23 Nov 2023