gistfile1.txt

diff --git a/src/Routing/RouteSubscriber.php b/src/Routing/RouteSubscriber.php
index e13d151..0cab523 100644
--- a/src/Routing/RouteSubscriber.php
+++ b/src/Routing/RouteSubscriber.php
@@ -76,7 +76,7 @@ class RouteSubscriber extends RouteSubscriberBase {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     $events = parent::getSubscribedEvents();
     $events[RoutingEvents::ALTER] = ['onAlterRoutes', 100];
     return $events;