diff --git a/src/Resources/Refund.php b/src/Resources/Refund.php
index <HASH>..<HASH> 100644
--- a/src/Resources/Refund.php
+++ b/src/Resources/Refund.php
@@ -49,6 +49,22 @@ class Refund extends BaseResource
     public $paymentId;
 
     /**
+     * The order id that was refunded.
+     *
+     * @var string|null
+     */
+    public $orderId;
+
+    /**
+     * The order lines contain the actual things the customer ordered.
+     * The lines will show the quantity, discountAmount, vatAmount and totalAmount
+     * refunded.
+     *
+     * @var array|object[]|null
+     */
+    public $lines;
+
+    /**
      * The settlement amount
      *
      * @var object
Added orderId and lines attributes