diff --git a/v5/types.go b/v5/types.go
index aa491fe..744fdba 100644
--- a/v5/types.go
+++ b/v5/types.go
@@ -1,6 +1,11 @@
 package v5
 
-import "net/http"
+import (
+	"encoding/json"
+	"net/http"
+	"reflect"
+	"strings"
+)
 
 // ByID is "id" constant to use as `by` property in methods
 const ByID = "id"
@@ -355,14 +360,55 @@ type OrderDeliveryService struct {
 	Active bool   `json:"active,omitempty"`
 }
 
-// OrderDeliveryData type
-type OrderDeliveryData struct {
+// OrderDeliveryDataBasic type
+type OrderDeliveryDataBasic struct {
 	TrackNumber        string `json:"trackNumber,omitempty"`
 	Status             string `json:"status,omitempty"`
 	PickuppointAddress string `json:"pickuppointAddress,omitempty"`
 	PayerType          string `json:"payerType,omitempty"`
 }
 
+// OrderDeliveryData type
+type OrderDeliveryData struct {
+	OrderDeliveryDataBasic
+	AdditionalFields map[string]interface{}
+}
+
+// UnmarshalJSON method
+func (v *OrderDeliveryData) UnmarshalJSON(b []byte) error {
+	var additionalData map[string]interface{}
+	json.Unmarshal(b, &additionalData)
+	json.Unmarshal(b, &v.OrderDeliveryDataBasic)
+	object := reflect.TypeOf(v.OrderDeliveryDataBasic)
+
+	for i := 0; i < object.NumField(); i++ {
+		field := object.Field(i)
+
+		if i, ok := field.Tag.Lookup("json"); ok {
+			name := strings.Split(i, ",")[0]
+			delete(additionalData, strings.TrimSpace(name))
+		} else {
+			delete(additionalData, field.Name)
+		}
+	}
+
+	v.AdditionalFields = additionalData
+	return nil
+}
+
+// MarshalJSON method
+func (v OrderDeliveryData) MarshalJSON() ([]byte, error) {
+	result := map[string]interface{}{}
+	data, _ := json.Marshal(v.OrderDeliveryDataBasic)
+	json.Unmarshal(data, &result)
+
+	for key, value := range v.AdditionalFields {
+		result[key] = value
+	}
+
+	return json.Marshal(result)
+}
+
 // OrderMarketplace type
 type OrderMarketplace struct {
 	Code    string `json:"code,omitempty"`
diff --git a/v5/types_test.go b/v5/types_test.go
new file mode 100644
index 0000000..dc9e6db
--- /dev/null
+++ b/v5/types_test.go
@@ -0,0 +1,55 @@
+package v5
+
+import (
+	"encoding/json"
+	"reflect"
+	"testing"
+)
+
+func TestClient_OrderDeliveryData(t *testing.T) {
+	d := OrderDeliveryData{
+		OrderDeliveryDataBasic: OrderDeliveryDataBasic{
+			"track",
+			"status",
+			"address",
+			"type",
+		},
+	}
+
+	data, _ := json.Marshal(d)
+	expectedStr := `{"payerType":"type","pickuppointAddress":"address","status":"status","trackNumber":"track"}`
+	if string(data) != expectedStr {
+		t.Errorf("Marshaled: %s\nExpected: %s\n", data, expectedStr)
+	}
+
+	d.AdditionalFields = map[string]interface{}{
+		"customFirst":  "one",
+		"customSecond": "two",
+	}
+
+	data, _ = json.Marshal(d)
+	expectedStr = `{"customFirst":"one","customSecond":"two","payerType":"type","pickuppointAddress":"address","status":"status","trackNumber":"track"}`
+	if string(data) != expectedStr {
+		t.Errorf("Marshaled: %s\nExpected: %s\n", data, expectedStr)
+	}
+
+	d = OrderDeliveryData{}
+	json.Unmarshal(data, &d)
+	expected := OrderDeliveryData{
+		OrderDeliveryDataBasic: OrderDeliveryDataBasic{
+			"track",
+			"status",
+			"address",
+			"type",
+		},
+		AdditionalFields: map[string]interface{}{
+			"customFirst":  "one",
+			"customSecond": "two",
+		},
+	}
+
+	eq := reflect.DeepEqual(expected, d)
+	if eq != true {
+		t.Errorf("Unmarshaled: %#v\nExpected: %#v\n", d, expected)
+	}
+}