diff --git a/src/Laravel/Providers/ScoutApmServiceProvider.php b/src/Laravel/Providers/ScoutApmServiceProvider.php
index f3ab6cef..3d81531c 100644
--- a/src/Laravel/Providers/ScoutApmServiceProvider.php
+++ b/src/Laravel/Providers/ScoutApmServiceProvider.php
@@ -46,6 +46,7 @@
 use function config_path;
 use function sprintf;
 
+/** @internal This class extends a third party vendor, so we mark as internal to not expose upstream BC breaks */
 final class ScoutApmServiceProvider extends ServiceProvider
 {
     private const CONFIG_SERVICE_KEY = ScoutApmAgent::class . '_config';
diff --git a/src/ScoutApmBundle/DependencyInjection/ScoutApmExtension.php b/src/ScoutApmBundle/DependencyInjection/ScoutApmExtension.php
index ff86d1cc..7902b716 100644
--- a/src/ScoutApmBundle/DependencyInjection/ScoutApmExtension.php
+++ b/src/ScoutApmBundle/DependencyInjection/ScoutApmExtension.php
@@ -13,6 +13,7 @@
 
 use function array_key_exists;
 
+/** @internal This class extends a third party vendor, so we mark as internal to not expose upstream BC breaks */
 final class ScoutApmExtension extends Extension
 {
     /**
diff --git a/src/ScoutApmBundle/ScoutApmBundle.php b/src/ScoutApmBundle/ScoutApmBundle.php
index bb9a19cb..31b1cf78 100644
--- a/src/ScoutApmBundle/ScoutApmBundle.php
+++ b/src/ScoutApmBundle/ScoutApmBundle.php
@@ -13,6 +13,7 @@
 use function array_map;
 use function assert;
 
+/** @internal This class extends a third party vendor, so we mark as internal to not expose upstream BC breaks */
 final class ScoutApmBundle extends Bundle
 {
     private const DOCTRINE_CONNECTIONS = ['doctrine.dbal.default_connection'];
diff --git a/src/ScoutApmBundle/Twig/TwigDecorator.php b/src/ScoutApmBundle/Twig/TwigDecorator.php
index f35ca261..7975b015 100644
--- a/src/ScoutApmBundle/Twig/TwigDecorator.php
+++ b/src/ScoutApmBundle/Twig/TwigDecorator.php
@@ -9,6 +9,7 @@
 use Twig\Environment as Twig;
 use Twig\TemplateWrapper;
 
+/** @internal This class extends a third party vendor, so we mark as internal to not expose upstream BC breaks */
 class TwigDecorator extends Twig
 {
     use TwigMethods;
diff --git a/src/ScoutApmBundle/symfony-version-compatibility.php b/src/ScoutApmBundle/symfony-version-compatibility.php
index 591f8697..7f8e6fa7 100644
--- a/src/ScoutApmBundle/symfony-version-compatibility.php
+++ b/src/ScoutApmBundle/symfony-version-compatibility.php
@@ -7,6 +7,7 @@
 namespace Symfony\Component\HttpKernel\Event
 {
     if (! class_exists(ControllerEvent::class) && class_exists(FilterControllerEvent::class)) {
+        /** @internal This class extends a third party vendor, so we mark as internal to not expose upstream BC breaks */
         class ControllerEvent extends FilterControllerEvent {
         }
     }