diff --git a/docs/en/docs/release-notes.md b/docs/en/docs/release-notes.md
index 5410c75b8..9d4bd3301 100644
--- a/docs/en/docs/release-notes.md
+++ b/docs/en/docs/release-notes.md
@@ -7,6 +7,10 @@ hide:
 
 ## Latest Changes
 
+### Fixes
+
+* 🐛 Fix `convert_underscores=False` for header Pydantic models. PR [#13515](https://github.com/fastapi/fastapi/pull/13515) by [@tiangolo](https://github.com/tiangolo).
+
 ### Docs
 
 * 📝 Update `docs/en/docs/tutorial/middleware.md`. PR [#13444](https://github.com/fastapi/fastapi/pull/13444) by [@Rishat-F](https://github.com/Rishat-F).