diff --git a/package.json b/package.json
index 4748fdf..3f09b98 100644
--- a/package.json
+++ b/package.json
@@ -16,9 +16,10 @@
     "build": "chcp 65001 && npm run typecheck && electron-vite build",
     "postinstall": "electron-builder install-app-deps",
     "build:unpack": "chcp 65001 && set PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 && npm run build && electron-builder --dir",
-    "build:win": "chcp 65001 && set PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 && npm run build && electron-builder --win",
-    "build:mac": "chcp 65001 && electron-vite build && electron-builder --mac",
-    "build:linux": "chcp 65001 && electron-vite build && electron-builder --linux",
+    "build:win": "chcp 65001 && set PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 && npm run prebuild && npm run build && electron-builder --win",
+    "build:mac": "chcp 65001 && npm run prebuild && electron-vite build && electron-builder --mac",
+    "build:linux": "chcp 65001 && npm run prebuild && electron-vite build && electron-builder --linux",
+    "prebuild": "node -e \"const fs=require('fs');['dist','out'].forEach(d=>{try{fs.rmSync(d,{recursive:true})}catch(e){}})\"",
     "test": "vitest",
     "test:run": "vitest run",
     "test:coverage": "vitest run --coverage",