diff --git a/src/app/api/user/hardcover-shelves/[id]/route.ts b/src/app/api/user/hardcover-shelves/[id]/route.ts
index 8141a07..5c74203 100644
--- a/src/app/api/user/hardcover-shelves/[id]/route.ts
+++ b/src/app/api/user/hardcover-shelves/[id]/route.ts
@@ -156,7 +156,7 @@ export async function PATCH(
       if (needsResync) {
         try {
           const jobQueue = getJobQueueService();
-          await jobQueue.addSyncShelvesJob(undefined, updated.id, 'hardcover', 0);
+          await jobQueue.addSyncShelvesJob(undefined, updated.id, 'hardcover', 0, req.user.id);
         } catch (error) {
           logger.error('Failed to trigger immediate list sync', {
             error: error instanceof Error ? error.message : String(error),
diff --git a/tests/api/goodreads-shelves-id.routes.test.ts b/tests/api/goodreads-shelves-id.routes.test.ts
index 97bff25..73be891 100644
--- a/tests/api/goodreads-shelves-id.routes.test.ts
+++ b/tests/api/goodreads-shelves-id.routes.test.ts
@@ -164,7 +164,7 @@ describe('PATCH /api/user/goodreads-shelves/[id]', () => {
       where: { id: 'shelf-1' },
       data: { rssUrl: NEW_RSS, lastSyncAt: null, bookCount: null, coverUrls: null },
     });
-    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, updatedShelf.id, 'goodreads', 0);
+    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, updatedShelf.id, 'goodreads', 0, 'user-1');
   });
 
   it('still returns 200 even when the sync job fails to enqueue', async () => {
diff --git a/tests/api/hardcover-shelves-id.routes.test.ts b/tests/api/hardcover-shelves-id.routes.test.ts
index dc10efe..58d6c11 100644
--- a/tests/api/hardcover-shelves-id.routes.test.ts
+++ b/tests/api/hardcover-shelves-id.routes.test.ts
@@ -195,6 +195,7 @@ describe('PATCH /api/user/hardcover-shelves/[id]', () => {
       SHELF.id,
       'hardcover',
       0,
+      'user-1',
     );
   });
 
@@ -216,7 +217,7 @@ describe('PATCH /api/user/hardcover-shelves/[id]', () => {
       where: { id: 'hc-shelf-1' },
       data: expect.objectContaining({ listId: 'status-3', lastSyncAt: null }),
     });
-    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, updated.id, 'hardcover', 0);
+    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, updated.id, 'hardcover', 0, 'user-1');
   });
 
   it('encrypts the apiToken before persisting', async () => {
diff --git a/tests/api/hardcover-shelves.routes.test.ts b/tests/api/hardcover-shelves.routes.test.ts
index 176bf1e..74620d1 100644
--- a/tests/api/hardcover-shelves.routes.test.ts
+++ b/tests/api/hardcover-shelves.routes.test.ts
@@ -137,7 +137,7 @@ describe('POST /api/user/hardcover-shelves', () => {
     );
 
     // Immediate background sync must have been triggered
-    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, 'new-shelf', 'hardcover', 0);
+    expect(jobQueueMock.addSyncShelvesJob).toHaveBeenCalledWith(undefined, 'new-shelf', 'hardcover', 0, 'user-1');
   });
 
   it('strips Bearer prefix from apiToken before encrypting', async () => {