diff --git a/CHANGELOG.md b/CHANGELOG.md
index e53788a3de..0806ad3445 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ Note that the only difference between `v2` and `v3` of the CodeQL Action is the
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.18.3. [#2449](https://github.com/github/codeql-action/pull/2449)
 
 ## 3.26.5 - 23 Aug 2024