diff --git a/Changelog.md b/Changelog.md
index bc08b1ad2..019dd30ff 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -9,6 +9,7 @@
 [0.11.3.1] — March 2022
 
 * [Windows: Remove problematic dependency on `gcc_s`](https://github.com/haskell/bytestring/pull/500)
+* [Refine CPP for obsolete versions of `gcc`](https://github.com/haskell/bytestring/pull/505)
 
 [0.11.3.1]: https://github.com/haskell/bytestring/compare/0.11.3.0...0.11.3.1