diff --git a/client/src/App.vue b/client/src/App.vue
index f6d878b..64167fc 100644
--- a/client/src/App.vue
+++ b/client/src/App.vue
@@ -9,6 +9,30 @@ import { onLaunch, onShow, onHide } from '@dcloudio/uni-app'
 
 onLaunch(() => {
   initTheme()
+  // #ifdef MP-WEIXIN
+  // 版本更新检测：新版本发布后，旧版本用户冷启动时静默下载、弹窗引导重启
+  const um = uni.getUpdateManager && uni.getUpdateManager()
+  if (um) {
+    um.onUpdateReady(() => {
+      uni.showModal({
+        title: '更新提示',
+        content: '新版本已经准备好，是否重启应用？',
+        confirmText: '立即重启',
+        cancelText: '稍后',
+        success: (m) => {
+          if (m.confirm) um.applyUpdate()
+        },
+      })
+    })
+    um.onUpdateFailed(() => {
+      uni.showModal({
+        title: '更新提示',
+        content: '新版本下载失败，请删除当前小程序后重新搜索打开',
+        showCancel: false,
+      })
+    })
+  }
+  // #endif
 })
 
 onShow(() => {})
diff --git a/client/src/manifest.json b/client/src/manifest.json
index de26396..76d66e8 100644
--- a/client/src/manifest.json
+++ b/client/src/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "宇之然AI维度",
   "appid": "wxdad62baf4ccd09e3",
-  "versionName": "1.4.2",
+  "versionName": "1.4.3",
   "versionCode": "100",
   "description": "AI 知识探索社区 — 从5个维度系统理解人工智能",
   "uni-app": {