diff --git a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/datasource/WooShippingLabelPackageMapper.kt b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/datasource/WooShippingLabelPackageMapper.kt
index 3ea362d7feae..71951ed2cb6b 100644
--- a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/datasource/WooShippingLabelPackageMapper.kt
+++ b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/datasource/WooShippingLabelPackageMapper.kt
@@ -4,13 +4,13 @@ import com.woocommerce.android.ui.orders.wooshippinglabels.packages.datasource.C
 import com.woocommerce.android.ui.orders.wooshippinglabels.packages.datasource.CarrierType.USPS
 import com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking.CarrierPackageGroupDTO
 import com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking.CarrierPredefinedPackagesDTO
+import com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking.CustomPackageDTO
 import com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking.PackageResponse
-import com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking.PredefinedPackageDTO
 import javax.inject.Inject
 
 class WooShippingLabelPackageMapper @Inject constructor() {
     operator fun invoke(response: PackageResponse): StorePackagesDAO {
-        val savedPackagesResponse = response.packages?.saved?.predefined ?: emptyList()
+        val savedPackagesResponse = response.packages?.saved?.custom ?: emptyList()
 
         return StorePackagesDAO(
             savedPackages = mapSavedPackages(savedPackagesResponse),
@@ -18,7 +18,7 @@ class WooShippingLabelPackageMapper @Inject constructor() {
         )
     }
 
-    private fun mapSavedPackages(savedResponse: List<PredefinedPackageDTO>): List<PackageDAO> {
+    private fun mapSavedPackages(savedResponse: List<CustomPackageDTO>): List<PackageDAO> {
         return savedResponse.map {
             PackageDAO(
                 id = it.id.orEmpty(),
@@ -59,7 +59,7 @@ class WooShippingLabelPackageMapper @Inject constructor() {
             PackageDAO(
                 id = it.id.orEmpty(),
                 name = it.name.orEmpty(),
-                dimensions = it.dimensions.orEmpty(),
+                dimensions = it.outerDimensions.orEmpty(),
                 isLetter = it.isLetter ?: false
             )
         } ?: emptyList()
diff --git a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/CarrierPackageDTOs.kt b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/CarrierPackageDTOs.kt
index 4b4af8a5ebbd..dcbe14bf809b 100644
--- a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/CarrierPackageDTOs.kt
+++ b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/CarrierPackageDTOs.kt
@@ -1,19 +1,33 @@
 package com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking
 
+import com.google.gson.annotations.SerializedName
+
 class CarrierPredefinedPackagesDTO {
     val usps: USPSPackageDTO? = null
+
+    @SerializedName("dhlexpress")
     val dhlExpress: DHLPackageDTO? = null
 }
 
 class USPSPackageDTO {
+    @SerializedName("pri_flat_boxes")
     val flatBoxes: CarrierPackageGroupDTO? = null
+
+    @SerializedName("pri_boxes")
     val boxes: CarrierPackageGroupDTO? = null
+
+    @SerializedName("pri_express_boxes")
     val expressBoxes: CarrierPackageGroupDTO? = null
+
+    @SerializedName("pri_envelopes")
     val envelopes: CarrierPackageGroupDTO? = null
+
+    @SerializedName("pri_express_envelopes")
     val expressEnvelopes: CarrierPackageGroupDTO? = null
 }
 
 class DHLPackageDTO {
+    @SerializedName("domestic_and_international")
     val domesticAndInternationalPackages: CarrierPackageGroupDTO? = null
 }
 
@@ -23,15 +37,30 @@ class CarrierPackageGroupDTO {
 }
 
 class PredefinedPackageDTO {
+    val id: String? = null
+    val name: String? = null
+
+    @SerializedName("inner_dimensions")
     val innerDimensions: String? = null
+
+    @SerializedName("outer_dimensions")
     val outerDimensions: String? = null
+
+    @SerializedName("box_weight")
     val boxWeight: Double? = null
+
+    @SerializedName("is_flat_rate")
     val isFlatRate: Boolean? = null
-    val id: String? = null
-    val name: String? = null
-    val dimensions: String? = null
+
+    @SerializedName("max_weight")
     val maxWeight: Double? = null
+
+    @SerializedName("is_letter")
     val isLetter: Boolean? = null
+
+    @SerializedName("group_id")
     val groupId: String? = null
+
+    @SerializedName("can_ship_international")
     val canShipInternational: Boolean? = null
 }
diff --git a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/PackageResponseDTOs.kt b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/PackageResponseDTOs.kt
index 8c8aad9853bf..a73898eb5c99 100644
--- a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/PackageResponseDTOs.kt
+++ b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/PackageResponseDTOs.kt
@@ -1,14 +1,23 @@
 package com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking
 
+import com.google.gson.annotations.SerializedName
+
 class PackageResponse {
     val storeOptions: PackageStoreOptionsDTO? = null
     val packages: PackagesInfoDTO? = null
 }
 
 class PackageStoreOptionsDTO {
+    @SerializedName("currency_symbol")
     val currencySymbol: String? = null
+
+    @SerializedName("dimension_unit")
     val dimensionUnit: String? = null
+
+    @SerializedName("weight_unit")
     val weightUnit: String? = null
+
+    @SerializedName("origin_country")
     val originCountry: String? = null
 }
 
diff --git a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/StorePackageDTOs.kt b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/StorePackageDTOs.kt
index 9b868b3db221..a9b4260c925b 100644
--- a/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/StorePackageDTOs.kt
+++ b/WooCommerce/src/main/kotlin/com/woocommerce/android/ui/orders/wooshippinglabels/packages/networking/StorePackageDTOs.kt
@@ -1,8 +1,9 @@
 package com.woocommerce.android.ui.orders.wooshippinglabels.packages.networking
 
+import com.google.gson.annotations.SerializedName
+
 class SavedPackageInfoDTO {
     val custom: List<CustomPackageDTO>? = null
-    val predefined: List<PredefinedPackageDTO>? = null
 }
 
 class CustomPackageDTO {
@@ -12,8 +13,14 @@ class CustomPackageDTO {
     val length: Double? = null
     val width: Double? = null
     val height: Double? = null
+    val type: String? = null
+
+    @SerializedName("box_weight")
     val boxWeight: Double? = null
+
+    @SerializedName("is_letter")
     val isLetter: Boolean? = null
+
+    @SerializedName("is_user_defined")
     val isUserDefined: Boolean? = null
-    val type: String? = null
 }