diff --git a/Models/NullDashboardBoard.php b/Models/NullDashboardBoard.php
index 55a2626..9ea74b1 100755
--- a/Models/NullDashboardBoard.php
+++ b/Models/NullDashboardBoard.php
@@ -35,4 +35,12 @@ final class NullDashboardBoard extends DashboardBoard
     {
         $this->id = $id;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize() : mixed
+    {
+        return ['id' => $this->id];
+    }
 }
diff --git a/Models/NullDashboardComponent.php b/Models/NullDashboardComponent.php
index 7fbe49c..6e6f141 100755
--- a/Models/NullDashboardComponent.php
+++ b/Models/NullDashboardComponent.php
@@ -35,4 +35,12 @@ final class NullDashboardComponent extends DashboardComponent
     {
         $this->id = $id;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize() : mixed
+    {
+        return ['id' => $this->id];
+    }
 }