diff --git a/tests/Admin/AdminTest.php b/tests/Admin/AdminTest.php
index 77ba859..fb20496 100755
--- a/tests/Admin/AdminTest.php
+++ b/tests/Admin/AdminTest.php
@@ -20,7 +20,7 @@ use phpOMS\Application\ApplicationAbstract;
 /**
  * @internal
  */
-class AdminTest extends \PHPUnit\Framework\TestCase
+final class AdminTest extends \PHPUnit\Framework\TestCase
 {
     protected const NAME = 'Media';
 
diff --git a/tests/Controller/ApiControllerTest.php b/tests/Controller/ApiControllerTest.php
index 943047e..90fb9bf 100755
--- a/tests/Controller/ApiControllerTest.php
+++ b/tests/Controller/ApiControllerTest.php
@@ -31,7 +31,7 @@ use phpOMS\Utils\TestUtils;
 /**
  * @internal
  */
-class ApiControllerTest extends \PHPUnit\Framework\TestCase
+final class ApiControllerTest extends \PHPUnit\Framework\TestCase
 {
     protected $app    = null;
 
diff --git a/tests/Models/CollectionMapperTest.php b/tests/Models/CollectionMapperTest.php
index 5c2de94..3309e0e 100755
--- a/tests/Models/CollectionMapperTest.php
+++ b/tests/Models/CollectionMapperTest.php
@@ -21,7 +21,7 @@ use Modules\Media\Models\CollectionMapper;
 /**
  * @internal
  */
-class CollectionMapperTest extends \PHPUnit\Framework\TestCase
+final class CollectionMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Media\Models\CollectionMapper
diff --git a/tests/Models/CollectionTest.php b/tests/Models/CollectionTest.php
index 8f3a2e3..166bf01 100755
--- a/tests/Models/CollectionTest.php
+++ b/tests/Models/CollectionTest.php
@@ -21,7 +21,7 @@ use Modules\Media\Models\NullMedia;
 /**
  * @internal
  */
-class CollectionTest extends \PHPUnit\Framework\TestCase
+final class CollectionTest extends \PHPUnit\Framework\TestCase
 {
     protected Collection $media;
 
diff --git a/tests/Models/MediaMapperTest.php b/tests/Models/MediaMapperTest.php
index 8d98228..b838b38 100755
--- a/tests/Models/MediaMapperTest.php
+++ b/tests/Models/MediaMapperTest.php
@@ -23,7 +23,7 @@ use Modules\Media\Models\MediaMapper;
 /**
  * @internal
  */
-class MediaMapperTest extends \PHPUnit\Framework\TestCase
+final class MediaMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Media\Models\MediaMapper
diff --git a/tests/Models/MediaTest.php b/tests/Models/MediaTest.php
index ba967db..6c56ea7 100755
--- a/tests/Models/MediaTest.php
+++ b/tests/Models/MediaTest.php
@@ -20,7 +20,7 @@ use Modules\Media\Models\Media;
 /**
  * @internal
  */
-class MediaTest extends \PHPUnit\Framework\TestCase
+final class MediaTest extends \PHPUnit\Framework\TestCase
 {
     protected Media $media;
 
diff --git a/tests/Views/MediaViewTest.php b/tests/Views/MediaViewTest.php
index 893b78f..803a540 100755
--- a/tests/Views/MediaViewTest.php
+++ b/tests/Views/MediaViewTest.php
@@ -20,7 +20,7 @@ use Modules\Media\Views\MediaView;
 /**
  * @internal
  */
-class MediaViewTest extends \PHPUnit\Framework\TestCase
+final class MediaViewTest extends \PHPUnit\Framework\TestCase
 {
     protected MediaView $view;