Vercel now supports pnpm v10. New projects with a file with will automatically use pnpm v10 for Install and Build Commands. Existing projects will continue to use pnpm v9 for backwards compatibility, since pnpm v9 also uses .pnpm-lock.yamllockfileVersion: '9.0'lockfileVersion: '9.0' Check your to see which version a deployment uses.

If you'd like to manually upgrade or downgrade your version, .build logsuse Corepack Visit the to learn more.package managers documentation Read more