diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 93f068edcf..297cafb341 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -8489,6 +8489,14 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
       </para>
      </listitem>
 
+     <listitem>
+      <para>
+        <literal>to_char(current_timestamp AT TIME ZONE 'UTC',
+        'YYYY-MM-DD"T"HH24:MI:SSZ')</literal> outputs the current UTC
+        date/time in <acronym>ISO</acronym> 8601 date/time format.
+      </para>
+     </listitem>
+
     </itemizedlist>
    </para>