diff --git a/apps/readest-app/src/__tests__/hooks/useProgressSync.test.tsx b/apps/readest-app/src/__tests__/hooks/useProgressSync.test.tsx
new file mode 100644
index 00000000..b7287911
--- /dev/null
+++ b/apps/readest-app/src/__tests__/hooks/useProgressSync.test.tsx
@@ -0,0 +1,127 @@
+import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest';
+import { act, cleanup, renderHook } from '@testing-library/react';
+
+const h = vi.hoisted(() => {
+  // Zustand-like store mock: callable selector returning `state`, plus `.getState()`.
+  const makeStore = <T,>(state: T) => {
+    const fn = () => state;
+    (fn as unknown as { getState: () => T }).getState = () => state;
+    return fn as (() => T) & { getState: () => T };
+  };
+
+  const book = {
+    hash: 'h1',
+    format: 'PDF',
+    metaHash: 'm1',
+    updatedAt: 2000,
+    progress: [5, 100] as [number, number],
+  };
+  const config = {
+    progress: [5, 100] as [number, number],
+    location: 'cfi-loc',
+    updatedAt: 1000,
+  };
+  const libraryBook = { hash: 'h1', updatedAt: 2000, progress: [5, 100] as [number, number] };
+
+  return {
+    makeStore,
+    book,
+    config,
+    libraryBook,
+    user: { id: 'u1' },
+    syncConfigsMock: vi.fn(async () => {}),
+    syncBooksMock: vi.fn(async () => {}),
+    state: { syncedConfigs: [] as unknown[] | null },
+  };
+});
+
+vi.mock('@/context/AuthContext', () => ({
+  useAuth: () => ({ user: h.user }),
+}));
+
+vi.mock('@/hooks/useSync', () => ({
+  useSync: () => ({
+    syncedConfigs: h.state.syncedConfigs,
+    syncConfigs: h.syncConfigsMock,
+    syncBooks: h.syncBooksMock,
+  }),
+}));
+
+vi.mock('@/hooks/useTranslation', () => ({
+  useTranslation: () => (s: string) => s,
+}));
+
+vi.mock('@/store/bookDataStore', () => ({
+  useBookDataStore: h.makeStore({
+    getConfig: () => h.config,
+    setConfig: vi.fn(),
+    getBookData: () => ({ book: h.book }),
+  }),
+}));
+
+vi.mock('@/store/readerStore', () => ({
+  useReaderStore: h.makeStore({
+    getView: () => ({
+      renderer: { getContents: () => [], primaryIndex: 0 },
+      goTo: vi.fn(),
+    }),
+    getProgress: () => ({ location: 'cfi-loc' }),
+    setHoveredBookKey: vi.fn(),
+    getViewState: () => ({ previewMode: false }),
+  }),
+}));
+
+vi.mock('@/store/settingsStore', () => ({
+  useSettingsStore: h.makeStore({ settings: { globalViewSettings: {} } }),
+}));
+
+vi.mock('@/store/libraryStore', () => ({
+  useLibraryStore: h.makeStore({ library: [h.libraryBook] }),
+}));
+
+vi.mock('@/utils/serializer', () => ({
+  serializeConfig: () => JSON.stringify({ progress: [5, 100], location: 'cfi-loc' }),
+}));
+
+vi.mock('@/utils/xcfi', () => ({
+  getCFIFromXPointer: vi.fn(async () => ''),
+  getXPointerFromCFI: vi.fn(async () => ({ xpointer: '' })),
+}));
+
+vi.mock('@/libs/document', () => ({
+  CFI: { compare: () => 0 },
+}));
+
+import { useProgressSync } from '@/app/reader/hooks/useProgressSync';
+import { SYNC_PROGRESS_INTERVAL_SEC } from '@/services/constants';
+
+const flushAutoSync = async () => {
+  await act(async () => {
+    vi.advanceTimersByTime(SYNC_PROGRESS_INTERVAL_SEC * 1000 + 100);
+    for (let i = 0; i < 10; i++) await Promise.resolve();
+  });
+};
+
+beforeEach(() => {
+  vi.useFakeTimers();
+  h.syncConfigsMock.mockClear();
+  h.syncBooksMock.mockClear();
+  h.state.syncedConfigs = [];
+});
+
+afterEach(() => {
+  vi.useRealTimers();
+  cleanup();
+});
+
+describe('useProgressSync', () => {
+  test('auto-sync push also pushes the books row so other devices see fresh progress', async () => {
+    renderHook(() => useProgressSync('h1-view1'));
+    await flushAutoSync();
+
+    // configs lane still pushed
+    expect(h.syncConfigsMock).toHaveBeenCalledWith(expect.any(Array), 'h1', 'm1', 'push');
+    // books lane also pushed with the in-memory library Book
+    expect(h.syncBooksMock).toHaveBeenCalledWith([h.libraryBook], 'push');
+  });
+});
diff --git a/apps/readest-app/src/app/reader/hooks/useProgressSync.ts b/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
index 69ebe394..e8140ea2 100644
--- a/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
+++ b/apps/readest-app/src/app/reader/hooks/useProgressSync.ts
@@ -3,6 +3,7 @@ import { useAuth } from '@/context/AuthContext';
 import { useSync } from '@/hooks/useSync';
 import { BookConfig, FIXED_LAYOUT_FORMATS } from '@/types/book';
 import { useBookDataStore } from '@/store/bookDataStore';
+import { useLibraryStore } from '@/store/libraryStore';
 import { useReaderStore } from '@/store/readerStore';
 import { useSettingsStore } from '@/store/settingsStore';
 import { useTranslation } from '@/hooks/useTranslation';
@@ -18,7 +19,7 @@ export const useProgressSync = (bookKey: string) => {
   const { getConfig, setConfig, getBookData } = useBookDataStore();
   const { getView, getProgress, setHoveredBookKey } = useReaderStore();
   const { settings } = useSettingsStore();
-  const { syncedConfigs, syncConfigs } = useSync(bookKey);
+  const { syncedConfigs, syncConfigs, syncBooks } = useSync(bookKey);
   const { user } = useAuth();
   const progress = getProgress(bookKey);
 
@@ -36,6 +37,18 @@ export const useProgressSync = (bookKey: string) => {
     );
     delete compressedConfig.booknotes;
     await syncConfigs([compressedConfig], bookHash, metaHash, 'push');
+
+    // Also push the corresponding `books` row. The library sync lane
+    // (useBooksSync) only runs while the library page is mounted, so while a
+    // reader stays open the server's `books` record is never re-pushed and
+    // other devices' library pull-to-refresh keeps showing stale progress
+    // (issue #4198). useProgressAutoSave has already merged config.progress
+    // into the in-memory library Book via saveConfig, so we just forward
+    // that book through the books lane.
+    const libraryBook = useLibraryStore.getState().library.find((b) => b.hash === bookHash);
+    if (libraryBook && !libraryBook.deletedAt) {
+      await syncBooks([libraryBook], 'push');
+    }
   };
 
   const pullConfig = async (bookKey: string) => {