diff --git a/admin_manual/release_notes/upgrade_to_28.rst b/admin_manual/release_notes/upgrade_to_28.rst
index 785a93d80..a70d21b8d 100644
--- a/admin_manual/release_notes/upgrade_to_28.rst
+++ b/admin_manual/release_notes/upgrade_to_28.rst
@@ -9,6 +9,11 @@ System requirements
 
 To be documented
 
+Web server configuration
+------------------------
+
+* The recommended :ref:`nginx configuration<nginx-config>` changed as Nextcloud Talk now serves audio files with ``.ogg`` / ``.flac`` extension, make sure to add these extensions to the list of static files.
+
 Monitoring
 ----------