diff --git a/apps/readest-app/src/app/library/page.tsx b/apps/readest-app/src/app/library/page.tsx
index 4161e377..a5608591 100644
--- a/apps/readest-app/src/app/library/page.tsx
+++ b/apps/readest-app/src/app/library/page.tsx
@@ -511,9 +511,9 @@ const LibraryPageContent = ({ searchParams }: { searchParams: ReadonlyURLSearchP
     }
   };
 
-  const handleBookDownload = async (book: Book) => {
+  const handleBookDownload = async (book: Book, redownload = false) => {
     try {
-      await appService?.downloadBook(book, false, (progress) => {
+      await appService?.downloadBook(book, false, redownload, (progress) => {
         updateBookTransferProgress(book.hash, progress);
       });
       await updateBook(envConfig, book);
diff --git a/apps/readest-app/src/components/metadata/BookDetailModal.tsx b/apps/readest-app/src/components/metadata/BookDetailModal.tsx
index 2d3ef170..9df90cdf 100644
--- a/apps/readest-app/src/components/metadata/BookDetailModal.tsx
+++ b/apps/readest-app/src/components/metadata/BookDetailModal.tsx
@@ -18,7 +18,7 @@ interface BookDetailModalProps {
   book: Book;
   isOpen: boolean;
   onClose: () => void;
-  handleBookDownload?: (book: Book) => void;
+  handleBookDownload?: (book: Book, redownload?: boolean) => void;
   handleBookUpload?: (book: Book) => void;
   handleBookDelete?: (book: Book) => void;
   handleBookDeleteCloudBackup?: (book: Book) => void;
@@ -132,7 +132,7 @@ const BookDetailModal: React.FC<BookDetailModalProps> = ({
   const handleRedownload = async () => {
     handleClose();
     if (handleBookDownload) {
-      handleBookDownload(book);
+      handleBookDownload(book, true);
     }
   };
 
diff --git a/apps/readest-app/src/services/appService.ts b/apps/readest-app/src/services/appService.ts
index ff81b823..e7683d74 100644
--- a/apps/readest-app/src/services/appService.ts
+++ b/apps/readest-app/src/services/appService.ts
@@ -381,13 +381,19 @@ export abstract class BaseAppService implements AppService {
     }
   }
 
-  async downloadBook(book: Book, onlyCover = false, onProgress?: ProgressHandler): Promise<void> {
+  async downloadBook(
+    book: Book,
+    onlyCover = false,
+    redownload = false,
+    onProgress?: ProgressHandler,
+  ): Promise<void> {
     let bookDownloaded = false;
     let bookCoverDownloaded = false;
     const completedFiles = { count: 0 };
     let toDownloadFpCount = 0;
-    const needDownCover = !(await this.fs.exists(getCoverFilename(book), 'Books'));
-    const needDownBook = !onlyCover && !(await this.fs.exists(getLocalBookFilename(book), 'Books'));
+    const needDownCover = !(await this.fs.exists(getCoverFilename(book), 'Books')) || redownload;
+    const needDownBook =
+      (!onlyCover && !(await this.fs.exists(getLocalBookFilename(book), 'Books'))) || redownload;
     if (needDownCover) {
       toDownloadFpCount++;
     }
diff --git a/apps/readest-app/src/types/system.ts b/apps/readest-app/src/types/system.ts
index 079ffb0e..759ad754 100644
--- a/apps/readest-app/src/types/system.ts
+++ b/apps/readest-app/src/types/system.ts
@@ -59,7 +59,12 @@ export interface AppService {
   ): Promise<Book | null>;
   deleteBook(book: Book, includingUploaded?: boolean, includingLocal?: boolean): Promise<void>;
   uploadBook(book: Book, onProgress?: ProgressHandler): Promise<void>;
-  downloadBook(book: Book, onlyCover?: boolean, onProgress?: ProgressHandler): Promise<void>;
+  downloadBook(
+    book: Book,
+    onlyCover?: boolean,
+    redownload?: boolean,
+    onProgress?: ProgressHandler,
+  ): Promise<void>;
   isBookAvailable(book: Book): Promise<boolean>;
   getBookFileSize(book: Book): Promise<number | null>;
   loadBookConfig(book: Book, settings: SystemSettings): Promise<BookConfig>;