diff --git a/Models/KanbanBoard.php b/Models/KanbanBoard.php
index ca45549..85e05fa 100644
--- a/Models/KanbanBoard.php
+++ b/Models/KanbanBoard.php
@@ -22,7 +22,7 @@ namespace Modules\Kanban\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class KanbanBoard implements \JsonSerializable
+class KanbanBoard implements \JsonSerializable
 {
     private $id = 0;
 
diff --git a/Models/KanbanCard.php b/Models/KanbanCard.php
index 9ba0424..895affa 100644
--- a/Models/KanbanCard.php
+++ b/Models/KanbanCard.php
@@ -24,7 +24,7 @@ use Modules\Media\Models\Media;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class KanbanCard implements \JsonSerializable
+class KanbanCard implements \JsonSerializable
 {
     private $id = 0;
 
diff --git a/Models/KanbanCardComment.php b/Models/KanbanCardComment.php
index 2ffe355..82503d8 100644
--- a/Models/KanbanCardComment.php
+++ b/Models/KanbanCardComment.php
@@ -24,7 +24,7 @@ use Modules\Media\Models\Media;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class KanbanCardComment implements \JsonSerializable
+class KanbanCardComment implements \JsonSerializable
 {
     private $id = 0;
 
diff --git a/Models/KanbanColumn.php b/Models/KanbanColumn.php
index b849b56..01d1b6d 100644
--- a/Models/KanbanColumn.php
+++ b/Models/KanbanColumn.php
@@ -22,7 +22,7 @@ namespace Modules\Kanban\Models;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class KanbanColumn implements \JsonSerializable
+class KanbanColumn implements \JsonSerializable
 {
     private $id = 0;
 
diff --git a/Models/KanbanLabel.php b/Models/KanbanLabel.php
index 3b835dc..c18b8bd 100644
--- a/Models/KanbanLabel.php
+++ b/Models/KanbanLabel.php
@@ -24,7 +24,7 @@ use Modules\Media\Models\Media;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-final class KanbanLabel implements \JsonSerializable
+class KanbanLabel implements \JsonSerializable
 {
     private $id = 0;