End of Life for now.json

Vercel has announced the deprecation of the legacy now.json configuration file format. Support will be officially removed on March 31, 2026, giving developers over a year to complete their migration.

Migration Path

Migrating from now.json to the newer configuration format is straightforward:

• Rename your now.json file to vercel.json
• No content changes are required—the file content remains the same
• All existing configurations will continue to work with the new filename

What Developers Should Know

This deprecation is part of Vercel's effort to modernize its configuration system. The vercel.json format is now the standard for file-based project configuration.

For teams with more complex configuration requirements, Vercel also offers vercel.ts, which enables programmatic project configuration for advanced use cases.

Next Steps

Developers should plan to update any existing projects still using now.json before the March 31, 2026 deadline. Refer to the official documentation for details on configuring projects with vercel.json.