diff --git a/docs/en/docs/release-notes.md b/docs/en/docs/release-notes.md
index 37ffd3052..9df0a665d 100644
--- a/docs/en/docs/release-notes.md
+++ b/docs/en/docs/release-notes.md
@@ -7,6 +7,10 @@ hide:
 
 ## Latest Changes
 
+### Fixes
+
+* 🐛 Fix tagged discriminated union not recognized as body field. PR [#12942](https://github.com/fastapi/fastapi/pull/12942) by [@frankie567](https://github.com/frankie567).
+
 ### Internal
 
 * ⬆ Bump astral-sh/setup-uv from 6 to 7. PR [#14167](https://github.com/fastapi/fastapi/pull/14167) by [@dependabot[bot]](https://github.com/apps/dependabot).