diff --git a/modules/localgov_services_status/src/EventSubscriber/PageHeaderSubscriber.php b/modules/localgov_services_status/src/EventSubscriber/PageHeaderSubscriber.php
index bc2c33e..a0c4d46 100644
--- a/modules/localgov_services_status/src/EventSubscriber/PageHeaderSubscriber.php
+++ b/modules/localgov_services_status/src/EventSubscriber/PageHeaderSubscriber.php
@@ -33,7 +33,7 @@ public function __construct(CurrentPathStack $current_path_stack) {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     return [
       PageHeaderDisplayEvent::EVENT_NAME => ['setPageHeader', 0],
     ];