diff --git a/src/Artistas/PagSeguroRecorrente.php b/src/Artistas/PagSeguroRecorrente.php
index a3836ba..bec860b 100644
--- a/src/Artistas/PagSeguroRecorrente.php
+++ b/src/Artistas/PagSeguroRecorrente.php
@@ -82,6 +82,7 @@ public function sendPreApprovalRequest(array $preApprovalRequest)
             'preApprovalExpirationValue'        => $this->sanitizeNumber($preApprovalRequest, 'preApprovalExpirationValue'),
             'preApprovalExpirationUnit'         => $this->sanitize($preApprovalRequest, 'preApprovalExpirationUnit'),
             'maxUses'                           => $this->sanitizeNumber($preApprovalRequest, 'maxUses'),
+            'reference'                         => $this->reference,
         ];
 
         $this->validatePreApprovalRequest($preApprovalRequest);