diff --git a/appstore/model.go b/appstore/model.go
index 06372ef..68e50e2 100644
--- a/appstore/model.go
+++ b/appstore/model.go
@@ -145,8 +145,9 @@ type (
 	IAPResponseForIOS6 struct {
 		AutoRenewProductID     string         `json:"auto_renew_product_id"`
 		AutoRenewStatus        int            `json:"auto_renew_status"`
-		ExpirationIntent       string         `json:"expiration_intent"`
-		ISInBillingRetryPeriod string         `json:"is_in_billing_retry_period"`
+		CancellationReason     string         `json:"cancellation_reason,omitempty"`
+		ExpirationIntent       string         `json:"expiration_intent,omitempty"`
+		IsInBillingRetryPeriod string         `json:"is_in_billing_retry_period,omitempty"`
 		LatestReceiptInfo      ReceiptForIOS6 `json:"latest_expired_receipt_info"`
 		Receipt                ReceiptForIOS6 `json:"receipt"`
 		Status                 int            `json:"status"`
@@ -156,6 +157,7 @@ type (
 		AppItemID numericString `json:"app_item_id"`
 		BID       string        `json:"bid"`
 		BVRS      string        `json:"bvrs"`
+		CancellationDate
 		ExpiresDate
 		IsTrialPeriod        string `json:"is_trial_period"`
 		IsInIntroOfferPeriod string `json:"is_in_intro_offer_period"`