diff --git a/admin_manual/release_notes/upgrade_to_30.rst b/admin_manual/release_notes/upgrade_to_30.rst
index bafb651d0b1..f1b7fe0cf54 100644
--- a/admin_manual/release_notes/upgrade_to_30.rst
+++ b/admin_manual/release_notes/upgrade_to_30.rst
@@ -8,6 +8,7 @@ System requirements
 * PHP 8.1 is now deprecated but still supported.
 * PHP 8.0 is no longer supported.
 * PostgreSQL 9.4 is no longer supported.
+* MariaDB 10.3 and 10.5 are no longer supported.
 
 Web server configuration
 ------------------------