diff --git a/Models/Employee.php b/Models/Employee.php
index 0c78d79..aad211b 100644
--- a/Models/Employee.php
+++ b/Models/Employee.php
@@ -33,7 +33,7 @@ class Employee implements ArrayableInterface, \JsonSerializable
      * @var int
      * @since 1.0.0
      */
-    private $id = 0;
+    private int $id = 0;
 
     private $account = null;