diff --git a/tests/Admin/AdminTest.php b/tests/Admin/AdminTest.php
index 8ada941..b9de9a1 100755
--- a/tests/Admin/AdminTest.php
+++ b/tests/Admin/AdminTest.php
@@ -17,7 +17,7 @@ namespace Modules\Organization\tests\Admin;
 /**
  * @internal
  */
-class AdminTest extends \PHPUnit\Framework\TestCase
+final class AdminTest extends \PHPUnit\Framework\TestCase
 {
     protected const NAME = 'Organization';
 
diff --git a/tests/Controller/ApiControllerTest.php b/tests/Controller/ApiControllerTest.php
index 734f293..fb9f004 100755
--- a/tests/Controller/ApiControllerTest.php
+++ b/tests/Controller/ApiControllerTest.php
@@ -36,7 +36,7 @@ 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/DepartmentMapperTest.php b/tests/Models/DepartmentMapperTest.php
index 045db21..455f3f2 100755
--- a/tests/Models/DepartmentMapperTest.php
+++ b/tests/Models/DepartmentMapperTest.php
@@ -22,7 +22,7 @@ use Modules\Organization\Models\NullUnit;
 /**
  * @internal
  */
-class DepartmentMapperTest extends \PHPUnit\Framework\TestCase
+final class DepartmentMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Organization\Models\DepartmentMapper
diff --git a/tests/Models/DepartmentTest.php b/tests/Models/DepartmentTest.php
index 567a419..32affc4 100755
--- a/tests/Models/DepartmentTest.php
+++ b/tests/Models/DepartmentTest.php
@@ -22,7 +22,7 @@ use Modules\Organization\Models\Status;
 /**
  * @internal
  */
-class DepartmentTest extends \PHPUnit\Framework\TestCase
+final class DepartmentTest extends \PHPUnit\Framework\TestCase
 {
     private Department $department;
 
diff --git a/tests/Models/PositionMapperTest.php b/tests/Models/PositionMapperTest.php
index 9b9659c..c4347bf 100755
--- a/tests/Models/PositionMapperTest.php
+++ b/tests/Models/PositionMapperTest.php
@@ -21,7 +21,7 @@ use Modules\Organization\Models\PositionMapper;
 /**
  * @internal
  */
-class PositionMapperTest extends \PHPUnit\Framework\TestCase
+final class PositionMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Organization\Models\PositionMapper
diff --git a/tests/Models/PositionTest.php b/tests/Models/PositionTest.php
index 32f464d..a567a9e 100755
--- a/tests/Models/PositionTest.php
+++ b/tests/Models/PositionTest.php
@@ -22,7 +22,7 @@ use Modules\Organization\Models\Status;
 /**
  * @internal
  */
-class PositionTest extends \PHPUnit\Framework\TestCase
+final class PositionTest extends \PHPUnit\Framework\TestCase
 {
     private Position $position;
 
diff --git a/tests/Models/UnitMapperTest.php b/tests/Models/UnitMapperTest.php
index 2b1df01..4db1e84 100755
--- a/tests/Models/UnitMapperTest.php
+++ b/tests/Models/UnitMapperTest.php
@@ -21,7 +21,7 @@ use Modules\Organization\Models\UnitMapper;
 /**
  * @internal
  */
-class UnitMapperTest extends \PHPUnit\Framework\TestCase
+final class UnitMapperTest extends \PHPUnit\Framework\TestCase
 {
     /**
      * @covers Modules\Organization\Models\UnitMapper
diff --git a/tests/Models/UnitTest.php b/tests/Models/UnitTest.php
index 23b4977..bba5489 100755
--- a/tests/Models/UnitTest.php
+++ b/tests/Models/UnitTest.php
@@ -22,7 +22,7 @@ use Modules\Organization\Models\Unit;
 /**
  * @internal
  */
-class UnitTest extends \PHPUnit\Framework\TestCase
+final class UnitTest extends \PHPUnit\Framework\TestCase
 {
     private Unit $unit;