diff --git a/src/Resource/BatchSendingItem.php b/src/Resource/BatchSendingItem.php
index 9e6647e..39a64a5 100644
--- a/src/Resource/BatchSendingItem.php
+++ b/src/Resource/BatchSendingItem.php
@@ -13,7 +13,7 @@ class BatchSendingItem extends BaseResource
 
     public string $name;
 
-    public ?Envelope $envelope;
+    public ?string $envelopeId;
 
     public string $status;
 
@@ -24,7 +24,7 @@ class BatchSendingItem extends BaseResource
     public ?string $failedMessage;
 
     /** @var array<BatchSendingItemRecipientRaw>  */
-    public array $recipientsRawData;
+    public array $recipients;
 
     /** @var array<Violation>|null */
     public ?array $violations;