diff --git a/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentSchema.php b/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentSchema.php
index fd4b9c0..4c88402 100644
--- a/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentSchema.php
+++ b/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentSchema.php
@@ -11,7 +11,7 @@ public function __construct(
         #[RuleValidator(['min:1', 'max:1024'])]
         public ?string $amazon_reference_id,
         public ?ContactInformationSchema $contact_information,
-        public DatesSchema $dates,
+        public ?DatesSchema $dates,
         public ShipmentDestinationSchema $destination,
         public ?FreightInformationSchema $freight_information,
         public ?string $name,
diff --git a/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentStatus.php b/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentStatus.php
index 6e1deca..2e541c4 100644
--- a/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentStatus.php
+++ b/src/Data/Schemas/FulfillmentInbound/v20240320/ShipmentStatus.php
@@ -16,4 +16,5 @@ enum ShipmentStatus: string
     case Receiving = 'RECEIVING';
     case Shipped = 'SHIPPED';
     case Working = 'WORKING';
+    case Unconfirmed = 'UNCONFIRMED';
 }