diff --git a/doc/configuration-permissions.xml b/doc/configuration-permissions.xml
index d3977404..0ec715c1 100644
--- a/doc/configuration-permissions.xml
+++ b/doc/configuration-permissions.xml
@@ -161,6 +161,8 @@
               <varname>standby_disconnect_on_failover</varname> is set to <literal>true</literal> in
               <filename>repmgr.conf</filename>. <command>ALTER SYSTEM</command> can only be executed by
               a superuser; if the &repmgr; user is not a superuser, this functionality will not be available.
+              From PostgreSQL 15 ALTER SYSTEM privilege for specific settings can be granted with e.g.
+              <command>GRANT ALTER SYSTEM ON PARAMETER wal_retrieve_retry_interval TO repmgr</command>.
             </simpara>
           </listitem>
         </itemizedlist>
diff --git a/doc/repmgrd-automatic-failover.xml b/doc/repmgrd-automatic-failover.xml
index 5c58890b..ce221669 100644
--- a/doc/repmgrd-automatic-failover.xml
+++ b/doc/repmgrd-automatic-failover.xml
@@ -280,6 +280,8 @@
     <para>
       <option>standby_disconnect_on_failover</option> is available with PostgreSQL 9.5 and later.
       Additionally this requires that the <literal>repmgr</literal> database user is a superuser.
+      From PostgreSQL 15 ALTER SYSTEM privilege for specific settings can be granted with
+      e.g. <command>GRANT ALTER SYSTEM ON PARAMETER wal_retrieve_retry_interval TO repmgr</command>.
     </para>
   </note>
   <para>