diff --git a/src/controllers/api/abandonLibraryDailyTaskController.ts b/src/controllers/api/abandonLibraryDailyTaskController.ts
new file mode 100644
index 00000000..ac515609
--- /dev/null
+++ b/src/controllers/api/abandonLibraryDailyTaskController.ts
@@ -0,0 +1,11 @@
+import { getInventory } from "@/src/services/inventoryService";
+import { getAccountIdForRequest } from "@/src/services/loginService";
+import { RequestHandler } from "express";
+
+export const abandonLibraryDailyTaskController: RequestHandler = async (req, res) => {
+    const accountId = await getAccountIdForRequest(req);
+    const inventory = await getInventory(accountId);
+    inventory.LibraryActiveDailyTaskInfo = undefined;
+    await inventory.save();
+    res.status(200).end();
+};
diff --git a/src/routes/api.ts b/src/routes/api.ts
index 332dc093..1e5a09da 100644
--- a/src/routes/api.ts
+++ b/src/routes/api.ts
@@ -1,4 +1,5 @@
 import express from "express";
+import { abandonLibraryDailyTaskController } from "@/src/controllers/api/abandonLibraryDailyTaskController";
 import { activateRandomModController } from "@/src/controllers/api/activateRandomModController";
 import { addFriendImageController } from "@/src/controllers/api/addFriendImageController";
 import { arcaneCommonController } from "@/src/controllers/api/arcaneCommonController";
@@ -94,6 +95,7 @@ import { upgradesController } from "@/src/controllers/api/upgradesController";
 const apiRouter = express.Router();
 
 // get
+apiRouter.get("/abandonLibraryDailyTask.php", abandonLibraryDailyTaskController);
 apiRouter.get("/checkDailyMissionBonus.php", checkDailyMissionBonusController);
 apiRouter.get("/credits.php", creditsController);
 apiRouter.get("/deleteSession.php", deleteSessionController);