diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dadb41..6ca0ac1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 本项目所有重要变更记录于此。格式参考 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.1.0/)，遵循 [语义化版本](https://semver.org/lang/zh-CN/)。
 
+## [2.3.1] - 2026-05-22
+
+### Changed
+
+- **更新微信交流群二维码**：旧二维码即将失效，替换 README 中 5 个交流群（群 1-5）的入群二维码。
+
 ## [2.3.0] - 2026-05-14
 
 主线：一波部署与运行时韧性专项——Docker / 桌面端 / 在线引擎三端的"装不上、起不来、跑一半挂"问题集中清理，并新增全局代理与转写模型就绪门禁。
diff --git a/README.md b/README.md
index 606f47a..18b4af1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
     <p align="center">
   <img src="./doc/icon.svg" alt="BiliNote Banner" width="50" height="50"  />
 </p>
-<h1 align="center" > BiliNote v2.3.0</h1>
+<h1 align="center" > BiliNote v2.3.1</h1>
 </div>
 
 <p align="center"><i>AI 视频笔记生成工具 让 AI 为你的视频做笔记</i></p>
diff --git a/doc/wechat-group-1.png b/doc/wechat-group-1.png
index ca8d6ec..19aba2d 100644
Binary files a/doc/wechat-group-1.png and b/doc/wechat-group-1.png differ
diff --git a/doc/wechat-group-2.png b/doc/wechat-group-2.png
index f2fcd0d..dd5522d 100644
Binary files a/doc/wechat-group-2.png and b/doc/wechat-group-2.png differ
diff --git a/doc/wechat-group-3.png b/doc/wechat-group-3.png
index a7ba555..c7a327a 100644
Binary files a/doc/wechat-group-3.png and b/doc/wechat-group-3.png differ
diff --git a/doc/wechat-group-4.png b/doc/wechat-group-4.png
index 15a85c8..37086f8 100644
Binary files a/doc/wechat-group-4.png and b/doc/wechat-group-4.png differ
diff --git a/doc/wechat-group-5.png b/doc/wechat-group-5.png
index b57c5f0..5bf4085 100644
Binary files a/doc/wechat-group-5.png and b/doc/wechat-group-5.png differ