diff --git a/src/EventSubscriber/CustomLayoutSubscriber.php b/src/EventSubscriber/CustomLayoutSubscriber.php
new file mode 100644
index 0000000..2323b21
--- /dev/null
+++ b/src/EventSubscriber/CustomLayoutSubscriber.php
@@ -0,0 +1,46 @@
+<?php
+declare(strict_types=1);
+
+namespace FrontendPermissionToolkitBundle\EventSubscriber;
+
+use FrontendPermissionToolkitBundle\CoreExtensions\ClassDefinitions\DynamicPermissionResource;
+use Pimcore\Event\DataObjectCustomLayoutEvents;
+use Pimcore\Event\Model\DataObject\CustomLayoutEvent;
+use Pimcore\Model\DataObject\ClassDefinition;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * @internal
+ */
+final class CustomLayoutSubscriber implements EventSubscriberInterface
+{
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            DataObjectCustomLayoutEvents::PRE_ADD => 'onUpdate',
+            DataObjectCustomLayoutEvents::PRE_UPDATE => 'onUpdate',
+        ];
+    }
+
+    public function onUpdate(CustomLayoutEvent $event): void
+    {
+        $customLayout = $event->getCustomLayout();
+        $this->resetPermissionResources($customLayout->getLayoutDefinitions());
+    }
+
+    private function resetPermissionResources(ClassDefinition\Data|ClassDefinition\Layout|null $layout): void
+    {
+        if($layout === null) {
+            return;
+        }
+
+        if ($layout instanceof DynamicPermissionResource) {
+            $layout->setPermissionResources([]);
+        }
+        if (method_exists($layout, 'getChildren')) {
+            foreach ($layout->getChildren() ?? [] as $child) {
+                $this->resetPermissionResources($child);
+            }
+        }
+    }
+}
diff --git a/src/Resources/config/services.yml b/src/Resources/config/services.yml
index 0b08772..6d3c762 100644
--- a/src/Resources/config/services.yml
+++ b/src/Resources/config/services.yml
@@ -7,3 +7,7 @@ services:
 
     bundle.frontendpermissiontoolkit.service:
         alias: FrontendPermissionToolkitBundle\Service
+
+    FrontendPermissionToolkitBundle\EventSubscriber\CustomLayoutSubscriber:
+        tags:
+            - { name: kernel.event_subscriber }
\ No newline at end of file