diff --git a/MangoPay/PayOutPaymentDetailsBankWire.php b/MangoPay/PayOutPaymentDetailsBankWire.php
index 2919f83b..ce19a729 100644
--- a/MangoPay/PayOutPaymentDetailsBankWire.php
+++ b/MangoPay/PayOutPaymentDetailsBankWire.php
@@ -19,6 +19,12 @@ class PayOutPaymentDetailsBankWire extends Libraries\Dto implements PayOutPaymen
      */
     public $BankWireRef;
 
+    /**
+     * The PaymentRef must be sent on payouts that are reimbursing bank wire pay-ins and pay-ins to virtual IBANs,
+     * @var PayOutPaymentRef
+     */
+    public $PaymentRef;
+
     /**
      * The parameter "PayoutModeRequested" can take 3 different values : "STANDARD", "INSTANT_PAYMENT", "INSTANT_PAYMENT_ONLY"
      *
diff --git a/MangoPay/PayOutPaymentRef.php b/MangoPay/PayOutPaymentRef.php
new file mode 100644
index 00000000..a1d080cd
--- /dev/null
+++ b/MangoPay/PayOutPaymentRef.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace MangoPay;
+
+class PayOutPaymentRef extends Libraries\Dto
+{
+    /**
+     * ReasonType (PAYIN_REFUND)
+     * @var string
+     */
+    public $ReasonType;
+
+    /**
+     * @var string
+     */
+    public $referenceId;
+}
+
+/**
+ * Reason for PayOut
+ */
+class PayoutReasonType
+{
+    const PayInRefund = 'PAYIN_REFUND';
+}
\ No newline at end of file