diff --git a/README.md b/README.md
index 16fe075..c1c3cf5 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 <p align="center">
-<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@3.3.4/assets/img/options/about.png">
+<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@4.0.0/assets/img/options/about.png">
 </p>
 
 <p align="center">
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 726a093..005f33b 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -1,5 +1,5 @@
 <p align="center">
-<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@3.3.4/assets/img/options/about.png">
+<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@4.0.0/assets/img/options/about.png">
 </p>
 
 <p align="center">
@@ -31,13 +31,13 @@ Kratos 是一款专注于用户阅读体验的响应式 WordPress 主题，整
 ## 讨论交流
 
 <p align="center">
-<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@3.3.4/assets/img/options/discuss.png">
+<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@4.0.0/assets/img/options/discuss.png">
 </p>
 
 ## 打赏捐赠
 
 <p align="center">
-<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@3.3.4/assets/img/options/donate.png">
+<img src="https://cdn.jsdelivr.net/gh/vtrois/kratos@4.0.0/assets/img/options/donate.png">
 </p>
 
 ## 版权说明
diff --git a/assets/js/kratos.js b/assets/js/kratos.js
index 874d3b9..d52b8db 100644
--- a/assets/js/kratos.js
+++ b/assets/js/kratos.js
@@ -5,7 +5,7 @@
 ;(function () {
     'use strict'
 
-    var KRATOS_VERSION = '3.3.4'
+    var KRATOS_VERSION = '4.0.0'
 
     var navbarConfig = function () {
         $('#navbutton').on('click', function () {
diff --git a/functions.php b/functions.php
index 723e935..faf7004 100644
--- a/functions.php
+++ b/functions.php
@@ -7,7 +7,7 @@
  * @version 2021.08.20
  */
 
-define('THEME_VERSION', '3.3.4');
+define('THEME_VERSION', '4.0.0');
 
 // 主题配置
 require get_template_directory() . '/inc/codestar-framework/autoload.php';
diff --git a/inc/update-checker/update.json b/inc/update-checker/update.json
index 12dc9e8..7ba78eb 100644
--- a/inc/update-checker/update.json
+++ b/inc/update-checker/update.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.3.4",
-  "details_url": "https://github.com/vtrois/kratos/releases/tag/v3.3.4",
-  "download_url": "https://mirrors.vtrois.com/kratos/v3.3.4.zip"
+  "version": "4.0.0",
+  "details_url": "https://github.com/vtrois/kratos/releases/tag/v4.0.0",
+  "download_url": "https://mirrors.vtrois.com/kratos/v4.0.0.zip"
 }
diff --git a/style.css b/style.css
index e0ae1e7..0459828 100644
--- a/style.css
+++ b/style.css
@@ -2,7 +2,7 @@
 /*
 Theme Name: Kratos
 Text Domain: kratos
-Version: 3.3.4
+Version: 4.0.0
 Requires PHP: 7.0
 Description: 主题提供了多种针对自媒体博客需求的侧栏工具，删繁就简专注于用户的阅读体验，优化的邮件中心为你的网站留存加分添彩。
 Tags: 博客, 双栏, 响应式, 自定义背景, 自定义颜色, 自定义图标, 自定义菜单, 特色图像, 收录优化, 邮件中心, 主题选项, 小工具, 文章置顶, 无障碍友好