diff --git a/UPGRADE-5.3.md b/UPGRADE-5.3.md
index 1685d36ac272a..4d991a30805c2 100644
--- a/UPGRADE-5.3.md
+++ b/UPGRADE-5.3.md
@@ -13,6 +13,11 @@ Form
  * Deprecated passing an array as the second argument of the `RadioListMapper::mapDataToForms()` method, pass `\Traversable` instead.
  * Deprecated passing an array as the first argument of the `RadioListMapper::mapFormsToData()` method, pass `\Traversable` instead.
 
+HttpKernel
+----------
+
+ * Marked the class `Symfony\Component\HttpKernel\EventListener\DebugHandlersListener` as internal
+
 Security
 --------
 
diff --git a/src/Symfony/Component/HttpKernel/CHANGELOG.md b/src/Symfony/Component/HttpKernel/CHANGELOG.md
index db2821334323d..a5444039b0c8a 100644
--- a/src/Symfony/Component/HttpKernel/CHANGELOG.md
+++ b/src/Symfony/Component/HttpKernel/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+5.3.0
+-----
+
+ * marked the class `Symfony\Component\HttpKernel\EventListener\DebugHandlersListener` as internal
+
 5.2.0
 -----
 
diff --git a/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php b/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
index 6b677edd7ca6c..ee711798e987d 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/DebugHandlersListener.php
@@ -27,6 +27,8 @@
  * @author Nicolas Grekas <p@tchwork.com>
  *
  * @final
+ *
+ * @internal since Symfony 5.3
  */
 class DebugHandlersListener implements EventSubscriberInterface
 {