diff --git a/Models/Task.php b/Models/Task.php
index 31bce0f..2101658 100755
--- a/Models/Task.php
+++ b/Models/Task.php
@@ -59,7 +59,7 @@ class Task implements \JsonSerializable
     /**
      * Created.
      *
-     * @var \DateTime
+     * @var \DateTimeImmutable
      * @since 1.0.0
      */
     protected \DateTimeImmutable $createdAt;
diff --git a/Models/TaskElement.php b/Models/TaskElement.php
index 6b79258..6de9988 100755
--- a/Models/TaskElement.php
+++ b/Models/TaskElement.php
@@ -73,7 +73,7 @@ class TaskElement implements \JsonSerializable
     /**
      * Created.
      *
-     * @var \DateTime
+     * @var \DateTimeImmutable
      * @since 1.0.0
      */
     private \DateTimeImmutable $createdAt;