diff --git a/README.md b/README.md
index da4e8741..5ac26d6c 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,8 @@ export default function getPaymentData() {
                     integerAmountAfterDiscount: 10000,
                     integerDiscount: 0,
                     integerTax: 1000,
+                    integerUnitPrice: 10000,
+                    integerUnitPriceAfterDiscount: 10000,
                     name: 'Cheese',
                     quantity: 1,
                     sku: '123456789',
diff --git a/src/payment/v1/payment-mappers/order-mapper.js b/src/payment/v1/payment-mappers/order-mapper.js
index 3b4052b4..3f100c09 100644
--- a/src/payment/v1/payment-mappers/order-mapper.js
+++ b/src/payment/v1/payment-mappers/order-mapper.js
@@ -122,6 +122,7 @@ export default class OrderMapper {
             variant_id: itemData.variantId,
             name: itemData.name,
             price: itemData.integerAmount,
+            unit_price: itemData.integerUnitPrice,
             quantity: itemData.quantity,
             sku: itemData.sku,
         }));
diff --git a/src/payment/v2/payment-mappers/cart-mapper.js b/src/payment/v2/payment-mappers/cart-mapper.js
index f7d4e959..90c74631 100644
--- a/src/payment/v2/payment-mappers/cart-mapper.js
+++ b/src/payment/v2/payment-mappers/cart-mapper.js
@@ -34,6 +34,7 @@ export default class CartMapper {
             discount_amount: itemData.integerDiscount,
             name: itemData.name,
             price: itemData.integerAmount,
+            unit_price: itemData.integerUnitPrice,
             quantity: itemData.quantity,
             sku: itemData.sku,
             tax_amount: itemData.integerTax,
diff --git a/test/mocks/payment-request-data.js b/test/mocks/payment-request-data.js
index 0ccf9880..73a3416a 100644
--- a/test/mocks/payment-request-data.js
+++ b/test/mocks/payment-request-data.js
@@ -43,6 +43,8 @@ const paymentRequestDataMock = {
                 integerAmountAfterDiscount: 10000,
                 integerDiscount: 0,
                 integerTax: 1000,
+                integerUnitPrice: 10000,
+                integerUnitPriceAfterDiscount: 10000,
                 name: 'Cheese',
                 quantity: 1,
                 sku: '123456789',
diff --git a/test/payment/v1/payment-mappers/order-mapper.spec.js b/test/payment/v1/payment-mappers/order-mapper.spec.js
index 2262b324..e776f123 100644
--- a/test/payment/v1/payment-mappers/order-mapper.spec.js
+++ b/test/payment/v1/payment-mappers/order-mapper.spec.js
@@ -65,6 +65,7 @@ describe('OrderMapper', () => {
                     code: data.cart.items[0].id,
                     name: data.cart.items[0].name,
                     price: data.cart.items[0].integerAmount,
+                    unit_price: data.cart.items[0].integerUnitPrice,
                     variant_id: data.cart.items[0].variantId,
                     quantity: data.cart.items[0].quantity,
                     sku: data.cart.items[0].sku,
diff --git a/test/payment/v2/payment-mappers/cart-mapper.spec.js b/test/payment/v2/payment-mappers/cart-mapper.spec.js
index b92fa756..49a550f2 100644
--- a/test/payment/v2/payment-mappers/cart-mapper.spec.js
+++ b/test/payment/v2/payment-mappers/cart-mapper.spec.js
@@ -25,6 +25,7 @@ describe('CartMapper', () => {
                 discount_amount: item.integerDiscount,
                 name: item.name,
                 price: item.integerAmount,
+                unit_price: item.integerUnitPrice,
                 quantity: item.quantity,
                 sku: item.sku,
                 tax_amount: item.integerTax,