Using the codemod

To update to Next.js version 16, you can use the upgrade codemode:

npx @next/codemod@canary upgrade latest

The codemod is able to:

• Update next.config.js to use the new turbopack configuration
• Migrate from next lint to the ESLint CLI
• Migrate from deprecated middleware convention to proxy
• Remove unstable_ prefix from stabilized APIs
• Remove experimental_ppr Route Segment Config from pages and layouts

npm install next@latest react@latest react-dom@latest

If you are using TypeScript, ensure you also upgrade @type/react and @types/react-dom to their latest versions.

Turbopack by default

Previously you had to enable Turbopack using --turbopack , or --turbo

{  
  "scripts": {
    "dev": "next dev --turbopack",    
    "build": "next build --turbopack",    
    "start": "next start"  
  }
}

This is no longer necessary. You can update your package.json scripts:

{  
  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start"
  }
}