diff --git a/admin_manual/release_notes/upgrade_to_28.rst b/admin_manual/release_notes/upgrade_to_28.rst
index f777ed924..99838c997 100644
--- a/admin_manual/release_notes/upgrade_to_28.rst
+++ b/admin_manual/release_notes/upgrade_to_28.rst
@@ -8,3 +8,12 @@ System requirements
 * PHP 8.3 is now supported, but 8.2 is recommended.
 
 To be documented
+
+Monitoring
+----------
+
+Beginning with Nextcloud 28, the monitoring endpoint no longer provides information about available app updates, as gathering the data always involves at least one external request to apps.nextcloud.com.
+
+You can still ask the monitoring endpoint to show new app updates by using the URL parameter skipApps=false. However, please do not check this endpoint too often.
+
+https://github.com/nextcloud/serverinfo#api
\ No newline at end of file