Vercel now caches dependencies for projects using Yarn 2 and newer, reducing install times and improving build performance. Previously, caching was only supported for npm, pnpm, Bun, and Yarn 1.
To disable caching, set the environment variable VERCEL_FORCE_NO_BUILD_CACHE with a value of 1 in your project settings.
If you're using Yarn 4, enable Corepack, as recommended by Yarn.
Visit the Build Cache documentation to learn more.