diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c0e234..602819a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,25 @@ All notable changes to this project will be documented in this file. See [Conven
 
 <!-- #region recent-alpha -->
 
+## v0.0.1-alpha.21 (2026-09-22)
+
+### 💅 Refactors
+
+- **docs**:
+  - 统一各学科 sidebar 配置类型定义 &nbsp;-&nbsp; by **chufan** [<samp>(dbb5d)</samp>](https://github.com/mmdapl/408CSFamily/commit/dbb5d0e)
+- **vuepress**:
+  - 拆分站点配置并迁移至项目根目录 &nbsp;-&nbsp; by **chufan** [<samp>(11f16)</samp>](https://github.com/mmdapl/408CSFamily/commit/11f1664)
+  - 迁移主题样式与站点品牌资源 &nbsp;-&nbsp; by **chufan** [<samp>(2ddd1)</samp>](https://github.com/mmdapl/408CSFamily/commit/2ddd14a)
+  - 优化站点配置并统一侧边栏 permalink 解析 &nbsp;-&nbsp; by **chufan** [<samp>(42037)</samp>](https://github.com/mmdapl/408CSFamily/commit/420372f)
+
+### 📖 Documentation
+
+- 补全英文 permalink 并规范章节索引页 &nbsp;-&nbsp; by **chufan** [<samp>(acc2b)</samp>](https://github.com/mmdapl/408CSFamily/commit/acc2b07)
+- **ds**:
+  - 将章节配图移至同级 images 目录 &nbsp;-&nbsp; by **chufan** [<samp>(3f21c)</samp>](https://github.com/mmdapl/408CSFamily/commit/3f21c7c)
+
+**Release New Version v0.0.1-alpha.21 [👉 View Changes On GitHub](https://github.com/mmdapl/408CSFamily/compare/v0.0.1-alpha.20...v0.0.1-alpha.21)**
+
 ## v0.0.1-alpha.20 (2026-09-21)
 
 ### ✨ Features
diff --git a/package.json b/package.json
index 230c72c..a8855d5 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "408CSFamily",
   "type": "module",
-  "version": "0.0.1-alpha.20",
+  "version": "0.0.1-alpha.21",
   "packageManager": "pnpm@9.15.0",
   "description": "研究生考试408考点、工作面试计算机基础知识合集",
   "authorInfo": {