diff --git a/apps/readest-app/src-tauri/tauri.conf.json b/apps/readest-app/src-tauri/tauri.conf.json
index fd56b373..0752baaf 100644
--- a/apps/readest-app/src-tauri/tauri.conf.json
+++ b/apps/readest-app/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "../node_modules/@tauri-apps/cli/config.schema.json",
   "productName": "Readest",
-  "version": "0.5.1",
+  "version": "0.5.5",
   "identifier": "com.bilingify.digest",
   "build": {
     "frontendDist": "../out",
diff --git a/apps/readest-app/src/app/reader/components/sidebar/SideBar.tsx b/apps/readest-app/src/app/reader/components/sidebar/SideBar.tsx
index ef36d4d4..4e30a83a 100644
--- a/apps/readest-app/src/app/reader/components/sidebar/SideBar.tsx
+++ b/apps/readest-app/src/app/reader/components/sidebar/SideBar.tsx
@@ -1,6 +1,7 @@
 import clsx from 'clsx';
 import React, { useState, useEffect } from 'react';
 
+import { useEnv } from '@/context/EnvContext';
 import { useReaderStore } from '@/store/readerStore';
 import SidebarHeader from './Header';
 import SidebarContent from './Content';
@@ -18,10 +19,11 @@ const SideBar: React.FC<{
   onGoToLibrary: () => void;
   onOpenSplitView: () => void;
 }> = ({ width, isPinned, onGoToLibrary, onOpenSplitView }) => {
-  const { getBookData, getProgress } = useReaderStore();
-  const [activeTab, setActiveTab] = useState('toc');
+  const { envConfig } = useEnv();
+  const { sideBarBookKey, settings } = useReaderStore();
+  const { saveSettings, getBookData, getProgress } = useReaderStore();
+  const [activeTab, setActiveTab] = useState(settings.globalReadSettings.sideBarTab);
   const [currentHref, setCurrentHref] = useState<string | null>(null);
-  const { sideBarBookKey } = useReaderStore();
   const {
     sideBarWidth,
     isSideBarVisible,
@@ -47,6 +49,12 @@ const SideBar: React.FC<{
     setSideBarVisible(false);
   };
 
+  const handleTabChange = (tab: string) => {
+    setActiveTab(tab);
+    settings.globalReadSettings.sideBarTab = tab;
+    saveSettings(envConfig, settings);
+  };
+
   if (!sideBarBookKey) return null;
 
   const bookData = getBookData(sideBarBookKey);
@@ -84,7 +92,7 @@ const SideBar: React.FC<{
           currentHref={currentHref}
           sideBarBookKey={sideBarBookKey!}
         />
-        <TabNavigation activeTab={activeTab} onTabChange={setActiveTab} />
+        <TabNavigation activeTab={activeTab} onTabChange={handleTabChange} />
         <div
           className='drag-bar absolute right-0 top-0 h-full w-0.5 cursor-col-resize'
           onMouseDown={handleMouseDown}
diff --git a/apps/readest-app/src/services/constants.ts b/apps/readest-app/src/services/constants.ts
index 3e009c2f..34e23e99 100644
--- a/apps/readest-app/src/services/constants.ts
+++ b/apps/readest-app/src/services/constants.ts
@@ -7,6 +7,7 @@ export const CLOUD_BOOKS_SUBDIR = 'Readest/Books';
 export const DEFAULT_READSETTINGS: ReadSettings = {
   sideBarWidth: '25%',
   isSideBarPinned: true,
+  sideBarTab: 'toc',
   notebookWidth: '25%',
   isNotebookPinned: false,
   autohideCursor: true,
diff --git a/apps/readest-app/src/types/settings.ts b/apps/readest-app/src/types/settings.ts
index 513b61b3..b638ad32 100644
--- a/apps/readest-app/src/types/settings.ts
+++ b/apps/readest-app/src/types/settings.ts
@@ -5,6 +5,7 @@ export type ThemeType = 'light' | 'dark' | 'auto';
 export interface ReadSettings {
   sideBarWidth: string;
   isSideBarPinned: boolean;
+  sideBarTab: string;
   notebookWidth: string;
   isNotebookPinned: boolean;
   autohideCursor: boolean;