diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb02d9e..251cda7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,25 @@ All notable changes to CC Switch will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.4.0] - 2025-10-01
+
+### ✨ Features
+- Enable internationalization via i18next with a Chinese default and English fallback, plus an in-app language switcher
+- Add Claude plugin sync alongside the existing VS Code integration controls
+- Extend provider presets with optional API key URLs and updated models, including DeepSeek-V3.1-Terminus and Qwen3-Max
+- Support portable mode launches and enforce a single running instance to avoid conflicts
+
+### 🔧 Improvements
+- Allow minimizing the window to the system tray and add macOS Dock visibility management for tray workflows
+- Refresh the Settings modal with a scrollable layout, save icon, and cleaner language section
+- Smooth provider toggle states with consistent button widths/icons and prevent layout shifts when switching between Claude and Codex
+- Adjust the Windows MSI installer to target per-user LocalAppData and improve component tracking reliability
+
+### 🐛 Fixes
+- Remove the unnecessary OpenAI auth requirement from third-party provider configurations
+- Fix layout shifts while switching app types with Claude plugin sync enabled
+- Align Enable/In Use button states to avoid visual jank across VS Code and Codex views
+
 ## [3.3.0] - 2025-09-22
 
 ### ✨ Features
diff --git a/README.md b/README.md
index ddb537d..aae3e74 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,13 @@
 # Claude Code & Codex 供应商切换器
 
-[![Version](https://img.shields.io/badge/version-3.3.0-blue.svg)](https://github.com/farion1231/cc-switch/releases)
+[![Version](https://img.shields.io/badge/version-3.4.0-blue.svg)](https://github.com/farion1231/cc-switch/releases)
 [![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20macOS%20%7C%20Linux-lightgrey.svg)](https://github.com/farion1231/cc-switch/releases)
 [![Built with Tauri](https://img.shields.io/badge/built%20with-Tauri%202-orange.svg)](https://tauri.app/)
 
 一个用于管理和切换 Claude Code 与 Codex 不同供应商配置的桌面应用。
 
+> v3.4.0 ：新增 i18next 国际化（还有部分未完成）、对新模型（qwen-3-max, GLM-4.6, DeepSeek-V3.2-Exp）的支持、Claude 插件、单实例守护、托盘最小化及安装器优化等。
+
 > v3.3.0 ：VS Code Codex 插件一键配置/移除（默认自动同步）、Codex 通用配置片段与自定义向导增强、WSL 环境支持、跨平台托盘与 UI 优化。
 
 > v3.2.0 ：全新 UI、macOS系统托盘、内置更新器、原子写入与回滚、改进暗色样式、单一事实源（SSOT）与一次性迁移/归档。
@@ -14,14 +16,14 @@
 
 > v3.0.0 重大更新：从 Electron 完全迁移到 Tauri 2.0，应用体积显著降低、启动性能大幅提升。
 
-## 功能特性（v3.3.0）
+## 功能特性（v3.4.0）
 
-- **VS Code Codex 插件一键配置**：供应商卡片支持「应用到 VS Code / 从 VS Code 移除」，默认开启自动同步，并可跨 Code / Insiders / VSCodium 写入 `settings.json`
-- **通用配置片段**：Claude 与 Codex 共用 JSON/TOML 片段，提供编辑器 lint、内容校验、统一错误提示与本地持久化
-- **Codex 配置向导**：新增显示名称、专用 API Key URL、HTML5 校验与预设模板，方便快速配置第三方服务
-- **系统托盘与快捷操作**：窗口隐藏时仍可通过托盘切换供应商，并在自动同步开启时触发 VS Code 写入
-- **平台适配**：新增 Windows WSL 环境支持、Linux 自动禁用模态背景模糊解决白屏问题、macOS Dock 点击即可恢复窗口
-- **UI优化**：多处 UI 和使用体验优化
+- **国际化与语言切换**：内置 i18next，默认显示中文，可在设置中快速切换到英文，界面文文案自动实时刷新。
+- **Claude 插件同步**：在 VS Code 同步按钮旁新增 Claude 插件同步选项，与 Codex 同步互不冲突，切换供应商后立即应用。
+- **供应商预设扩展**：新增 DeepSeek--V3.2-Exp、Qwen3-Max、GLM-4.6 等最新模型。
+- **系统托盘与窗口行为**：窗口关闭可最小化到托盘，macOS 支持托盘模式下隐藏/显示 Dock，托盘切换时同步 Claude/Codex/插件状态。
+- **单实例**：保证同一时间仅运行一个实例，避免多开冲突。
+- **UI 与安装体验优化**：设置面板改为可滚动布局并加入保存图标，按钮宽度与状态一致性加强，Windows MSI 安装默认写入 per-user LocalAppData 并改进组件跟踪，Windows 便携版现在指向最新 release 页面，不再自动更为为安装版。
 
 ## 界面预览
 
diff --git a/package.json b/package.json
index ae5b4af..79e4ec2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cc-switch",
-  "version": "3.3.1",
+  "version": "3.4.0",
   "description": "Claude Code & Codex 供应商切换工具",
   "scripts": {
     "dev": "pnpm tauri dev",
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 4a9ea6b..911b3b6 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -563,7 +563,7 @@ dependencies = [
 
 [[package]]
 name = "cc-switch"
-version = "3.3.1"
+version = "3.4.0"
 dependencies = [
  "dirs 5.0.1",
  "log",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index c80b2f0..2133db3 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cc-switch"
-version = "3.3.1"
+version = "3.4.0"
 description = "Claude Code & Codex 供应商配置管理工具"
 authors = ["Jason Young"]
 license = "MIT"
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 8e312c7..4bf6571 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "CC Switch",
-  "version": "3.3.1",
+  "version": "3.4.0",
   "identifier": "com.ccswitch.desktop",
   "build": {
     "frontendDist": "../dist",