diff --git a/v5/client.go b/v5/client.go
index 31c096b..4c6b339 100644
--- a/v5/client.go
+++ b/v5/client.go
@@ -1806,30 +1806,31 @@ func (c *Client) CorporateCustomerEdit(customer CorporateCustomer, by string, si
 // Example:
 //
 // 	var client = v5.New("https://demo.url", "09jIJ")
+//  t, _ := time.Parse("2006-01-02 15:04:05", "2012-12-12 12:12:12")
 //
 //	data, status, err := client.DeliveryTracking(
-//		v5.DeliveryTrackingRequest{
+//		[]v5.DeliveryTrackingRequest{{
 //			DeliveryID: "1",
-//			TrackNumber "123",
-//			History: []DeliveryHistoryRecord{
+//			TrackNumber: "123",
+//			History: []v5.DeliveryHistoryRecord{
 //				{
 //					Code: "cancel",
-//					UpdatedAt: "2012-12-12 12:12:12"
+//					UpdatedAt: t.Format(time.RFC3339),
 //				},
-//			}
-//		},
+//			},
+//		}},
 //		"delivery-1",
 //	)
 //
 // 	if err.Error() != "" {
-// 		fmt.Printf("%v", err.RuntimeErr)
+// 		fmt.Printf("%v", err.Error())
 // 	}
 //
 // 	if status >= http.StatusBadRequest {
-// 		fmt.Printf("%v", err.ApiErr())
+// 		fmt.Printf("%v", err.Error())
 // 	}
 //
-func (c *Client) DeliveryTracking(parameters DeliveryTrackingRequest, subcode string) (SuccessfulResponse, int, *errs.Failure) {
+func (c *Client) DeliveryTracking(parameters []DeliveryTrackingRequest, subcode string) (SuccessfulResponse, int, *errs.Failure) {
 	var resp SuccessfulResponse
 
 	updateJSON, _ := json.Marshal(&parameters)
diff --git a/v5/client_test.go b/v5/client_test.go
index abed43b..5cce145 100644
--- a/v5/client_test.go
+++ b/v5/client_test.go
@@ -5473,6 +5473,43 @@ func TestClient_ProductsProperties(t *testing.T) {
 	}
 }
 
+func TestClient_DeliveryTracking(t *testing.T) {
+	c := client()
+
+	defer gock.Off()
+
+	p := url.Values{
+		"statusUpdate": {`[{"deliveryId":"123","history":[{"code":"1","updatedAt":"2020-01-01T00:00:00:000"}]}]`},
+	}
+
+	gock.New(crmURL).
+		Post("/delivery/generic/subcode/tracking").
+		MatchType("url").
+		BodyString(p.Encode()).
+		Reply(200).
+		BodyString(`{"success": true}`)
+
+	g, status, err := c.DeliveryTracking([]DeliveryTrackingRequest{{
+		DeliveryID: "123",
+		History: []DeliveryHistoryRecord{{
+			Code:      "1",
+			UpdatedAt: "2020-01-01T00:00:00:000",
+		}},
+	}}, "subcode")
+
+	if err.Error() != "" {
+		t.Errorf("%v", err.Error())
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ApiError())
+	}
+
+	if g.Success != true {
+		t.Errorf("%v", err.ApiError())
+	}
+}
+
 func TestClient_DeliveryShipments(t *testing.T) {
 	c := client()
 
diff --git a/v5/request.go b/v5/request.go
index 0de069e..87a5582 100644
--- a/v5/request.go
+++ b/v5/request.go
@@ -175,10 +175,10 @@ type ProductsPropertiesRequest struct {
 
 // DeliveryTrackingRequest type
 type DeliveryTrackingRequest struct {
-	DeliveryID  string                  `url:"deliveryId,omitempty"`
-	TrackNumber string                  `url:"trackNumber,omitempty"`
-	History     []DeliveryHistoryRecord `url:"history,omitempty,brackets"`
-	ExtraData   map[string]string       `url:"extraData,omitempty,brackets"`
+	DeliveryID  string                  `json:"deliveryId,omitempty"`
+	TrackNumber string                  `json:"trackNumber,omitempty"`
+	History     []DeliveryHistoryRecord `json:"history,omitempty,brackets"`
+	ExtraData   map[string]string       `json:"extraData,omitempty,brackets"`
 }
 
 // DeliveryShipmentsRequest type