diff --git a/src/ejabberd_options_doc.erl b/src/ejabberd_options_doc.erl
index 25edecf80..b8c89f914 100644
--- a/src/ejabberd_options_doc.erl
+++ b/src/ejabberd_options_doc.erl
@@ -1359,6 +1359,12 @@ doc() ->
         desc =>
 	    ?T("This option is 'true' by default, and is useful to disable "
 	       "prepared statements. The option is valid for PostgreSQL and MySQL.")}},
+     {sql_flags,
+      #{value => "[mysql_alternative_upsert]",
+        note => "added in 24.01",
+        desc =>
+	    ?T("This option accepts a list of SQL flags, and is empty by default. "
+               "'mysql_alternative_upsert' forces the alternative upsert implementation in MySQL.")}},
      {sql_query_timeout,
       #{value => "timeout()",
         desc =>