diff --git a/electron/main/updater.ts b/electron/main/updater.ts
index 50ae6b5..10c5a47 100644
--- a/electron/main/updater.ts
+++ b/electron/main/updater.ts
@@ -1,12 +1,15 @@
-// electron/main/updater.ts
-// 自动更新模块
-import { autoUpdater } from 'electron-updater'
+// electron-updater is CommonJS with a lazy getter for `autoUpdater`, so a named
+// ESM import fails at runtime under Node ESM (cjs-module-lexer can't detect it).
+// Use the default interop import and access the instance lazily inside initUpdater
+// (after app.whenReady), matching the original intended evaluation timing.
+import electronUpdater from 'electron-updater'
 import { BrowserWindow, ipcMain } from 'electron'
 
 let mainWindow: BrowserWindow | null = null
 
 export function initUpdater(win: BrowserWindow): void {
   mainWindow = win
+  const autoUpdater = electronUpdater.autoUpdater
 
   // 检查更新
   ipcMain.handle('updater:check', async () => {