diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 618b2c2..7bd48d1 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -30,6 +30,6 @@ use phpOMS\Module\WebInterface;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class BackendController extends Controller
+final class BackendController extends Controller
 {
 }
diff --git a/Models/Arrival.php b/Models/Arrival.php
index 608bd0d..54a30d8 100644
--- a/Models/Arrival.php
+++ b/Models/Arrival.php
@@ -22,7 +22,7 @@ namespace Modules\Warehousing\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class Arrival
+final class Arrival
 {
 
     /**
diff --git a/Models/Article.php b/Models/Article.php
index e61c8a6..b1d5de3 100644
--- a/Models/Article.php
+++ b/Models/Article.php
@@ -20,7 +20,7 @@ namespace Modules\Warehousing\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class Article
+final class Article
 {
 
     /**
diff --git a/Models/CountingList.php b/Models/CountingList.php
index 1ad77cc..5943c95 100644
--- a/Models/CountingList.php
+++ b/Models/CountingList.php
@@ -22,7 +22,7 @@ namespace Modules\Warehousing\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class CountingList
+final class CountingList
 {
 
 }
diff --git a/Models/Shipping.php b/Models/Shipping.php
index 6c71bdc..bcab2f2 100644
--- a/Models/Shipping.php
+++ b/Models/Shipping.php
@@ -22,7 +22,7 @@ namespace Modules\Warehousing\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class Shipping
+final class Shipping
 {
 
     /**
diff --git a/Models/Warehouse.php b/Models/Warehouse.php
index 7fcf83a..04d8587 100644
--- a/Models/Warehouse.php
+++ b/Models/Warehouse.php
@@ -22,7 +22,7 @@ namespace Modules\Warehousing\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class Warehouse
+final class Warehouse
 {
 
     /**