diff --git a/tests/Admin/AdminTest.php b/tests/Admin/AdminTest.php
index 904ed00..3a3636f 100755
--- a/tests/Admin/AdminTest.php
+++ b/tests/Admin/AdminTest.php
@@ -17,7 +17,7 @@ namespace Modules\Comments\tests\Admin;
 /**
  * @internal
  */
-class AdminTest extends \PHPUnit\Framework\TestCase
+final class AdminTest extends \PHPUnit\Framework\TestCase
 {
     protected const NAME = 'Comments';
 
diff --git a/tests/Models/CommentListMapperTest.php b/tests/Models/CommentListMapperTest.php
index 205d415..37657e7 100755
--- a/tests/Models/CommentListMapperTest.php
+++ b/tests/Models/CommentListMapperTest.php
@@ -22,7 +22,7 @@ use Modules\Comments\Models\CommentListMapper;
 /**
  * @internal
  */
-class CommentListMapperTest extends \PHPUnit\Framework\TestCase
+final class CommentListMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Comments\Models\CommentListMapper
diff --git a/tests/Models/CommentListTest.php b/tests/Models/CommentListTest.php
index 94b5fe6..1e640d2 100755
--- a/tests/Models/CommentListTest.php
+++ b/tests/Models/CommentListTest.php
@@ -20,7 +20,7 @@ use Modules\Comments\Models\CommentList;
 /**
  * @internal
  */
-class CommentListTest extends \PHPUnit\Framework\TestCase
+final class CommentListTest extends \PHPUnit\Framework\TestCase
 {
     private CommentList $list;
 
diff --git a/tests/Models/CommentMapperTest.php b/tests/Models/CommentMapperTest.php
index 25bfd47..57a7a86 100755
--- a/tests/Models/CommentMapperTest.php
+++ b/tests/Models/CommentMapperTest.php
@@ -22,7 +22,7 @@ use Modules\Comments\Models\CommentMapper;
 /**
  * @internal
  */
-class CommentMapperTest extends \PHPUnit\Framework\TestCase
+final class CommentMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Comments\Models\CommentMapper
diff --git a/tests/Models/CommentTest.php b/tests/Models/CommentTest.php
index 0b1e8d5..9225e83 100755
--- a/tests/Models/CommentTest.php
+++ b/tests/Models/CommentTest.php
@@ -23,7 +23,7 @@ use Modules\Comments\Models\NullComment;
 /**
  * @internal
  */
-class CommentTest extends \PHPUnit\Framework\TestCase
+final class CommentTest extends \PHPUnit\Framework\TestCase
 {
     private Comment $comment;
 
diff --git a/tests/Models/CommentVoteMapperTest.php b/tests/Models/CommentVoteMapperTest.php
index 73f5b98..15e73bb 100644
--- a/tests/Models/CommentVoteMapperTest.php
+++ b/tests/Models/CommentVoteMapperTest.php
@@ -25,7 +25,7 @@ use Modules\Comments\Models\CommentVoteMapper;
 /**
  * @internal
  */
-class CommentVoteMapperTest extends \PHPUnit\Framework\TestCase
+final class CommentVoteMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Comments\Models\CommentVote
diff --git a/tests/Models/CommentVoteTest.php b/tests/Models/CommentVoteTest.php
index 054ae1b..2c7eed7 100644
--- a/tests/Models/CommentVoteTest.php
+++ b/tests/Models/CommentVoteTest.php
@@ -19,7 +19,7 @@ use Modules\Comments\Models\CommentVote;
 /**
  * @internal
  */
-class CommentVoteTest extends \PHPUnit\Framework\TestCase
+final class CommentVoteTest extends \PHPUnit\Framework\TestCase
 {
     private CommentVote $vote;