diff --git a/src/EventSubscriber/SectionSubscriberRenderArray.php b/src/EventSubscriber/SectionSubscriberRenderArray.php
index 2bf3f6f..ef2e095 100644
--- a/src/EventSubscriber/SectionSubscriberRenderArray.php
+++ b/src/EventSubscriber/SectionSubscriberRenderArray.php
@@ -37,7 +37,7 @@ final class SectionSubscriberRenderArray implements EventSubscriberInterface {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     $events = [
       LayoutBuilderEvents::SECTION_COMPONENT_BUILD_RENDER_ARRAY => ['onSectionComponentBuildRender'],
     ];