diff --git a/CHANGELOG.md b/CHANGELOG.md
index 534f25ce5c..45ec507e25 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 2.15.1. [#1953](https://github.com/github/codeql-action/pull/1953)
 
 ## 2.22.3 - 13 Oct 2023