diff --git a/appstore/model.go b/appstore/model.go
index 45095da..4c93b22 100644
--- a/appstore/model.go
+++ b/appstore/model.go
@@ -76,16 +76,27 @@ type (
 		CancellationDatePST string `json:"cancellation_date_pst,omitempty"`
 	}
 
+	// The GracePeriodDate type indicates the grace period date for the subscription
+	GracePeriodDate struct {
+		GracePeriodDate    string `json:"grace_period_expires_date,omitempty"`
+		GracePeriodDateMS  string `json:"grace_period_expires_date_ms,omitempty"`
+		GracePeriodDatePST string `json:"grace_period_expires_date_pst,omitempty"`
+	}
+
 	// The InApp type has the receipt attributes
 	InApp struct {
-		Quantity              string `json:"quantity"`
-		ProductID             string `json:"product_id"`
-		TransactionID         string `json:"transaction_id"`
-		OriginalTransactionID string `json:"original_transaction_id"`
-		WebOrderLineItemID    string `json:"web_order_line_item_id,omitempty"`
+		Quantity                    string `json:"quantity"`
+		ProductID                   string `json:"product_id"`
+		TransactionID               string `json:"transaction_id"`
+		OriginalTransactionID       string `json:"original_transaction_id"`
+		WebOrderLineItemID          string `json:"web_order_line_item_id,omitempty"`
+		PromotionalOfferID          string `json:"promotional_offer_id"`
+		SubscriptionGroupIdentifier string `json:"subscription_group_identifier"`
 
 		IsTrialPeriod        string `json:"is_trial_period"`
 		IsInIntroOfferPeriod string `json:"is_in_intro_offer_period,omitempty"`
+		IsUpgraded           string `json:"is_upgraded"`
+
 		ExpiresDate
 
 		PurchaseDate
@@ -121,6 +132,8 @@ type (
 		SubscriptionPriceConsentStatus string `json:"price_consent_status"`
 		ProductID                      string `json:"product_id"`
 		OriginalTransactionID          string `json:"original_transaction_id"`
+
+		GracePeriodDate
 	}
 
 	// The IAPResponse type has the response properties
diff --git a/appstore/notification.go b/appstore/notification.go
index 4a38b82..5f340a2 100644
--- a/appstore/notification.go
+++ b/appstore/notification.go
@@ -9,7 +9,10 @@ const (
 	// Subscription was canceled by Apple customer support.
 	NotificationTypeCancel NotificationType = "CANCEL"
 	// Automatic renewal was successful for an expired subscription.
+	// Deprecated: DID_RECOVER should be used instead of RENEWAL
 	NotificationTypeRenewal NotificationType = "RENEWAL"
+	// Expired subscription recovered through a billing retry.
+	NotificationTypeDidRecover NotificationType = "DID_RECOVER"
 	// Customer renewed a subscription interactively after it lapsed.
 	NotificationTypeInteractiveRenewal NotificationType = "INTERACTIVE_RENEWAL"
 	// Customer changed the plan that takes affect at the next subscription renewal. Current active plan is not affected.
@@ -53,6 +56,14 @@ type NotificationReceipt struct {
 	CancellationDate
 }
 
+type NotificationUnifiedReceipt struct {
+	Status             string               `json:"status"`
+	Environment        Environment          `json:"environment"`
+	LatestReceipt      string               `json:"latest_receipt"`
+	LatestReceiptInfo  []InApp              `json:"latest_receipt_info"`
+	PendingRenewalInfo []PendingRenewalInfo `json:"pending_renewal_info,omitempty"`
+}
+
 type SubscriptionNotification struct {
 	Environment      NotificationEnvironment `json:"environment"`
 	NotificationType NotificationType        `json:"notification_type"`
@@ -85,6 +96,9 @@ type SubscriptionNotification struct {
 	LatestReceipt     string              `json:"latest_receipt"`
 	LatestReceiptInfo NotificationReceipt `json:"latest_receipt_info"`
 
+	// In the new notifications above properties latest_receipt, latest_receipt_info are moved under this one
+	UnifiedReceipt NotificationUnifiedReceipt `json:"unified_receipt"`
+
 	// Posted only if the notification_type is RENEWAL or CANCEL or if renewal failed and subscription expired.
 	LatestExpiredReceipt     string              `json:"latest_expired_receipt"`
 	LatestExpiredReceiptInfo NotificationReceipt `json:"latest_expired_receipt_info"`
diff --git a/playstore/validator_test.go b/playstore/validator_test.go
index 6677c49..709a4b1 100644
--- a/playstore/validator_test.go
+++ b/playstore/validator_test.go
@@ -74,7 +74,7 @@ func TestNewWithClient(t *testing.T) {
 func TestAcknowledgeSubscription(t *testing.T) {
 	t.Parallel()
 	// Exception scenario
-	expected := "googleapi: Error 404: No application was found for the given package name., applicationNotFound"
+	expected := "googleapi: Error 400: Invalid Value, invalid"
 
 	client, _ := New(jsonKey)
 	ctx := context.Background()
@@ -93,7 +93,7 @@ func TestAcknowledgeSubscription(t *testing.T) {
 func TestVerifySubscription(t *testing.T) {
 	t.Parallel()
 	// Exception scenario
-	expected := "googleapi: Error 404: No application was found for the given package name., applicationNotFound"
+	expected := "googleapi: Error 400: Invalid Value, invalid"
 
 	client, _ := New(jsonKey)
 	ctx := context.Background()
@@ -121,7 +121,7 @@ func TestVerifySubscriptionAndroidPublisherError(t *testing.T) {
 func TestVerifyProduct(t *testing.T) {
 	t.Parallel()
 	// Exception scenario
-	expected := "googleapi: Error 404: No application was found for the given package name., applicationNotFound"
+	expected := "googleapi: Error 400: Invalid Value, invalid"
 
 	client, _ := New(jsonKey)
 	ctx := context.Background()
@@ -159,7 +159,7 @@ func TestCancelSubscription(t *testing.T) {
 	}
 
 	client, _ = New(jsonKey)
-	expectedStr := "googleapi: Error 404: No application was found for the given package name., applicationNotFound"
+	expectedStr := "googleapi: Error 400: Invalid Value, invalid"
 	actual = client.CancelSubscription(ctx, "package", "productID", "purchaseToken")
 
 	if actual.Error() != expectedStr {