diff --git a/Models/WorkflowInstanceAbstractMapper.php b/Models/WorkflowInstanceAbstractMapper.php
index 402ccd8..bb88abd 100755
--- a/Models/WorkflowInstanceAbstractMapper.php
+++ b/Models/WorkflowInstanceAbstractMapper.php
@@ -24,6 +24,9 @@ use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
  * @license OMS License 2.0
  * @link    https://jingga.app
  * @since   1.0.0
+ *
+ * @template T of WorkflowInstanceAbstract
+ * @extends DataMapperFactory<T>
  */
 final class WorkflowInstanceAbstractMapper extends DataMapperFactory
 {