diff --git a/core/lib/Drupal/Core/CronInterface.php b/core/lib/Drupal/Core/CronInterface.php
index ed4828afe8a..57374db4015 100644
--- a/core/lib/Drupal/Core/CronInterface.php
+++ b/core/lib/Drupal/Core/CronInterface.php
@@ -9,6 +9,8 @@ namespace Drupal\Core;
 
 /**
  * An interface for running cron tasks.
+ *
+ * @see https://www.drupal.org/cron
  */
 interface CronInterface {