Auto update uv pyproject.toml dependencies

Unlike pip-tools, uv package manager currently doesn’t support automatically updating pyproject.toml based on the lock file. This script helps automate that process by reading the versions from uv.lock and updating your pyproject.toml accordingly.

Features of the Script

• Automatically updates both main dependencies and dependency groups
• Removes duplicate version constraints
• Preserves dependency extras (e.g., fastapi[standard])
• Creates a backup of pyproject.toml before making changes

Prerequisites

• Python 3.11+
• tomli-w package (pip install tomli-w)
• An updated uv.lock file (uv lock --update or uv lock -U)

Usage Instructions

1. Update your lock file: uv lock -U
2. Run the script: python upgrade_pyproject.py

Script

You can find the full script below: