diff --git a/manage.php b/manage.php
index 217b61f..a31d067 100644
--- a/manage.php
+++ b/manage.php
@@ -30,7 +30,7 @@ use auth_outage\local\outagelib;
 require_once(__DIR__ . '/../../config.php');
 require_once($CFG->libdir . '/adminlib.php');
 
-admin_externalpage_setup('auth_outage_manage');
+core\setting\page\externalpage::setup(null, 'auth_outage_manage');
 $PAGE->set_url(new moodle_url('/auth/outage/manage.php'));
 $output = $PAGE->get_renderer('auth_outage');