Release Notes

Released on 2025-10-09.

Enhancements

• Log Python choice in uv init (#16182)
• Fix pylock.toml config conflict error messages (#16211)

Configuration

• Add UV_UPLOAD_HTTP_TIMEOUT and respect UV_HTTP_TIMEOUT in uploads (#16040)
• Support UV_WORKING_DIRECTORY for setting --directory (#16125)

Bug fixes

• Allow missing Scripts directory (#16206)
• Fix handling of Python requests with pre-releases in ranges (#16208)
• Preserve comments on version bump (#16141)
• Retry all HTTP/2 errors (#16038)
• Treat deleted Windows registry keys as equivalent to missing ones (#16194)
• Ignore pre-release Python versions when a patch version is requested (#16210)

Documentation

• Document why uv discards upper bounds on requires-python (#15927)
• Document uv version environment variables were added in (#15196)

Install uv 0.9.1

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.9.1/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/uv/releases/download/0.9.1/uv-installer.ps1 | iex"

Download uv 0.9.1