diff --git a/src/controllers/api/inventoryController.ts b/src/controllers/api/inventoryController.ts
index ab739c4c..e9b15a63 100644
--- a/src/controllers/api/inventoryController.ts
+++ b/src/controllers/api/inventoryController.ts
@@ -18,10 +18,12 @@ import {
     addMiscItems,
     allDailyAffiliationKeys,
     cleanupInventory,
-    createLibraryDailyTask
+    createLibraryDailyTask,
+    generateRewardSeed
 } from "@/src/services/inventoryService";
 import { logger } from "@/src/utils/logger";
 import { catBreadHash } from "@/src/helpers/stringHelpers";
+import { Types } from "mongoose";
 
 export const inventoryController: RequestHandler = async (request, response) => {
     const accountId = await getAccountIdForRequest(request);
@@ -87,7 +89,7 @@ export const inventoryController: RequestHandler = async (request, response) =>
         cleanupInventory(inventory);
 
         inventory.NextRefill = new Date((Math.trunc(Date.now() / 86400000) + 1) * 86400000);
-        await inventory.save();
+        //await inventory.save();
     }
 
     if (
@@ -96,9 +98,20 @@ export const inventoryController: RequestHandler = async (request, response) =>
         new Date() >= inventory.InfestedFoundry.AbilityOverrideUnlockCooldown
     ) {
         handleSubsumeCompletion(inventory);
-        await inventory.save();
+        //await inventory.save();
     }
 
+    if (inventory.LastInventorySync) {
+        const lastSyncDuviriMood = Math.trunc(inventory.LastInventorySync.getTimestamp().getTime() / 7200000);
+        const currentDuviriMood = Math.trunc(Date.now() / 7200000);
+        if (lastSyncDuviriMood != currentDuviriMood) {
+            logger.debug(`refreshing duviri seed`);
+            inventory.DuviriInfo.Seed = generateRewardSeed();
+        }
+    }
+    inventory.LastInventorySync = new Types.ObjectId();
+    await inventory.save();
+
     response.json(await getInventoryResponse(inventory, "xpBasedLevelCapDisabled" in request.query));
 };
 
@@ -274,7 +287,7 @@ export const getInventoryResponse = async (
     }
 
     // Omitting this field so opening the navigation resyncs the inventory which is more desirable for typical usage.
-    //inventoryResponse.LastInventorySync = toOid(new Types.ObjectId());
+    inventoryResponse.LastInventorySync = undefined;
 
     // Set 2FA enabled so trading post can be used
     inventoryResponse.HWIDProtectEnabled = true;
diff --git a/src/models/inventoryModels/inventoryModel.ts b/src/models/inventoryModels/inventoryModel.ts
index 2c1b4b09..dcb5a536 100644
--- a/src/models/inventoryModels/inventoryModel.ts
+++ b/src/models/inventoryModels/inventoryModel.ts
@@ -1662,6 +1662,7 @@ const inventorySchema = new Schema<IInventoryDatabase, InventoryDocumentProps>(
 
         //Unknown and system
         DuviriInfo: DuviriInfoSchema,
+        LastInventorySync: Schema.Types.ObjectId,
         Mailbox: MailboxSchema,
         HandlerPoints: Number,
         ChallengesFixVersion: { type: Number, default: 6 },
@@ -1759,6 +1760,9 @@ inventorySchema.set("toJSON", {
                 sn: inventoryDatabase.LockedWeaponGroup.sn ? toOid(inventoryDatabase.LockedWeaponGroup.sn) : undefined
             };
         }
+        if (inventoryDatabase.LastInventorySync) {
+            inventoryResponse.LastInventorySync = toOid(inventoryDatabase.LastInventorySync);
+        }
     }
 });
 
diff --git a/src/types/inventoryTypes/inventoryTypes.ts b/src/types/inventoryTypes/inventoryTypes.ts
index 3662dc23..4973ff87 100644
--- a/src/types/inventoryTypes/inventoryTypes.ts
+++ b/src/types/inventoryTypes/inventoryTypes.ts
@@ -52,6 +52,7 @@ export interface IInventoryDatabase
             | "LastLiteSortieReward"
             | "CrewMembers"
             | "QualifyingInvasions"
+            | "LastInventorySync"
             | TEquipmentKey
         >,
         InventoryDatabaseEquipment {
@@ -89,6 +90,7 @@ export interface IInventoryDatabase
     LastLiteSortieReward?: ILastSortieRewardDatabase[];
     CrewMembers: ICrewMemberDatabase[];
     QualifyingInvasions: IInvasionProgressDatabase[];
+    LastInventorySync?: Types.ObjectId;
 }
 
 export interface IQuestKeyDatabase {
@@ -333,7 +335,7 @@ export interface IInventoryClient extends IDailyAffiliations, InventoryClientEqu
     LotusCustomization?: ILotusCustomization;
     UseAdultOperatorLoadout?: boolean;
     NemesisAbandonedRewards: string[];
-    LastInventorySync: IOid;
+    LastInventorySync?: IOid;
     NextRefill?: IMongoDate;
     FoundToday?: IMiscItem[]; // for Argon Crystals
     CustomMarkers?: ICustomMarkers[];