diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index d5a4edb9..5fe79dda 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -669,6 +669,11 @@ export const missionInventoryUpdate = async (data: IMissionInventoryUpdateReques
         }
     }
 
+    // LastRegionPlayed
+    if (data.LastRegionPlayed) {
+        inventory.LastRegionPlayed = data.LastRegionPlayed;
+    }
+
     // other
     addMods(inventory, RawUpgrades);
     addMiscItems(inventory, MiscItems);
diff --git a/src/types/inventoryTypes/inventoryTypes.ts b/src/types/inventoryTypes/inventoryTypes.ts
index f0ad1ec9..8bf0b48e 100644
--- a/src/types/inventoryTypes/inventoryTypes.ts
+++ b/src/types/inventoryTypes/inventoryTypes.ts
@@ -86,6 +86,8 @@ export interface IMailbox {
     LastInboxId: IOid;
 }
 
+export type TSolarMapRegion = "Earth" | "Ceres" | "Eris" | "Europa" | "Jupiter" | "Mars" | "Mercury" | "Neptune" | "Phobos" | "Pluto" | "Saturn" | "Sedna" | "Uranus" | "Venus" | "Void" | "SolarMapDeimosName";
+
 //TODO: perhaps split response and database into their own files
 
 export interface IPendingRecipeResponse extends Omit<IPendingRecipe, "CompletionDate"> {
@@ -142,7 +144,7 @@ export interface IInventoryResponse {
     CurrentLoadOutIds: Array<any[] | IOid>;
     Missions: IMission[];
     RandomUpgradesIdentified?: number;
-    LastRegionPlayed: string;
+    LastRegionPlayed: TSolarMapRegion;
     XPInfo: ITypeXPItem[];
     Recipes: ITypeCount[];
     WeaponSkins: IWeaponSkinClient[];
diff --git a/src/types/requestTypes.ts b/src/types/requestTypes.ts
index 3fc4c0f6..361f347f 100644
--- a/src/types/requestTypes.ts
+++ b/src/types/requestTypes.ts
@@ -11,6 +11,7 @@ import {
     IMission,
     IRawUpgrade,
     ISeasonChallenge,
+    TSolarMapRegion,
     TEquipmentKey
 } from "./inventoryTypes/inventoryTypes";
 
@@ -57,6 +58,7 @@ export interface IMissionInventoryUpdateRequest {
     RewardInfo?: IMissionInventoryUpdateRequestRewardInfo;
     Missions?: IMission;
     EvolutionProgress?: IEvolutionProgress[];
+    LastRegionPlayed?: TSolarMapRegion;
 
     FusionPoints?: number; // Not a part of the request, but we put it in this struct as an intermediate storage.
 }