How to Upgrade Next.js

Keeping your Next.js application up to date ensures you benefit from the latest features, performance improvements, bug fixes, and security updates. While minor releases are often straightforward, major versions may introduce breaking changes that require code modifications.

This guide walks you through the recommended process for upgrading a Next.js project safely.

1. Check Your Current Version

Before upgrading, identify the version currently used in your project.

npm list next

or

npm ls next 2. Review the Release Notes

Always read the release notes before upgrading. Pay special attention to:

  • New features
  • Breaking changes
  • Deprecated APIs
  • Dependency requirements
  • Migration guides

Changelogly provides concise release summaries, making it easier to understand what's changed before updating your application.

3. Upgrade the Package

If you're using npm:

npm install next@latest

With Yarn:

yarn add next@latest

With pnpm:

pnpm add next@latest 4. Update Related Dependencies

Next.js should generally be upgraded together with its peer dependencies.

npm install react@latest react-dom@latest

Also review other packages that integrate closely with Next.js, such as ESLint, TypeScript, authentication libraries, and deployment adapters.

5. Check for Breaking Changes

Major releases can modify framework behavior. Common areas to verify include:

  • App Router
  • Pages Router
  • Server Components
  • Route Handlers
  • Middleware
  • Image Optimization
  • Caching behavior
  • Environment variables
6. Run Your Test Suite

After upgrading, execute your automated tests and manually verify critical functionality.

  • User authentication
  • API endpoints
  • Forms
  • Dynamic routes
  • File uploads
  • Search functionality
  • Build process
7. Create a Production Build

Always verify that your application builds successfully.

npm run build

Resolve any warnings or errors before deploying.

8. Deploy to Staging First

Instead of deploying directly to production:

  • Deploy to a staging environment.
  • Validate performance.
  • Check logs for runtime errors.
  • Verify server-side rendering.
  • Monitor API responses.
Common Upgrade Issues

Some of the most common problems after upgrading include:

  • Outdated React versions.
  • Deprecated APIs.
  • TypeScript compilation errors.
  • ESLint configuration changes.
  • Middleware incompatibilities.
  • Third-party package conflicts.
Stay Updated with Changelogly

Keeping track of every Next.js release can be time-consuming. Changelogly summarizes new releases with key information, including:

  • Release dates
  • New features
  • Bug fixes
  • Security improvements
  • Breaking changes
  • Known issues

Following release summaries before upgrading helps reduce deployment risks and makes planning framework updates much easier.

Conclusion

Upgrading Next.js is usually a straightforward process when you follow a structured approach. Review release notes, update dependencies together, test thoroughly, and deploy gradually. Staying current with framework releases helps improve security, performance, and long-term maintainability of your applications.