diff --git a/src/EventSubscriber/CacheexcludeSubscriber.php b/src/EventSubscriber/CacheexcludeSubscriber.php
index 1a45cb0..e36ca3b 100644
--- a/src/EventSubscriber/CacheexcludeSubscriber.php
+++ b/src/EventSubscriber/CacheexcludeSubscriber.php
@@ -16,7 +16,7 @@ class CacheexcludeSubscriber implements EventSubscriberInterface {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     $events = [];
     $events[KernelEvents::REQUEST][] = ['disableCacheForPage'];