diff --git a/src/services/purchaseService.ts b/src/services/purchaseService.ts
index 48069432..7f0170d2 100644
--- a/src/services/purchaseService.ts
+++ b/src/services/purchaseService.ts
@@ -99,7 +99,7 @@ export const handlePurchase = async (
                         Expiry: new Date(parseInt(offer.Expiry.$date.$numberLong))
                     });
                 }
-                prePurchaseInventoryChanges.RecentVendorPurchases = {
+                prePurchaseInventoryChanges.NewVendorPurchase = {
                     VendorType: manifest.VendorInfo.TypeName,
                     PurchaseHistory: [
                         {
@@ -109,6 +109,7 @@ export const handlePurchase = async (
                         }
                     ]
                 };
+                prePurchaseInventoryChanges.RecentVendorPurchases = prePurchaseInventoryChanges.NewVendorPurchase;
             }
             purchaseRequest.PurchaseParams.Quantity *= offer.QuantityMultiplier;
         } else {
diff --git a/src/types/purchaseTypes.ts b/src/types/purchaseTypes.ts
index f665f9da..51459454 100644
--- a/src/types/purchaseTypes.ts
+++ b/src/types/purchaseTypes.ts
@@ -44,7 +44,8 @@ export type IInventoryChanges = {
     MiscItems?: IMiscItem[];
     EmailItems?: ITypeCount[];
     Nemesis?: Partial<INemesisClient>;
-    RecentVendorPurchases?: IRecentVendorPurchaseClient;
+    NewVendorPurchase?: IRecentVendorPurchaseClient; // >= 38.5.0
+    RecentVendorPurchases?: IRecentVendorPurchaseClient; // < 38.5.0
 } & Record<
         Exclude<
             string,