# Python package manager uv is now available for builds with zero configuration

**Published:** October 3, 2025 | **Authors:** Ricardo Gonzalez, Luke Phillips\-Sheard

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Vercel now uses [`uv`](https://docs.astral.sh/uv/), a fast Python package manager written in Rust, as the default package manager during the installation step for all Python builds.

This change makes builds **30-65%** faster and adds support for more dependency formats. In addition to `requirements.txt` or `Pipfile`, projects can now declare dependencies with a `uv.lock` or `pyproject.toml` file.

Learn more about the [Python runtime on Vercel](https://vercel.com/docs/functions/runtimes/python).

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)