diff --git a/docs/release-notes.md b/docs/release-notes.md
index d85642e19..729cc507f 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -1,5 +1,6 @@
 ## Latest changes
 
+* Add support for setting a `default_response_class` in the `FastAPI` instance or in `include_router`. Initial PR [#467](https://github.com/tiangolo/fastapi/pull/467) by [@toppk](https://github.com/toppk).
 * Add support for type annotations using strings and `from __future__ import annotations`. PR [#451](https://github.com/tiangolo/fastapi/pull/451) by [@dmontagu](https://github.com/dmontagu).
 
 ## 0.38.1