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 automatically running uv lock -U and then updating your pyproject.toml with the latest versions.

Features of the Script

• Fully automated: Runs uv lock -U automatically before updating pyproject.toml
• Updates both main dependencies and dependency groups
• Preserves dependency extras (e.g., fastapi[standard])
• Removes duplicate version constraints
• Clear progress indicators with success/failure feedback
• Shows exactly which dependencies were updated
• Proper error handling for missing uv command

Prerequisites

• Python 3.11+ (for built-in tomllib)
• tomli-w package (pip install tomli-w)
• uv installed and available in PATH

Usage Instructions

Simply run the script:

1

python upgrade_pyproject.py

The script will automatically:

1. Run uv lock -U to update all dependencies to their latest versions
2. Parse the updated lock file
3. Update your pyproject.toml to match the lock file versions
4. Display all changes made

What’s New

The updated script now handles the entire workflow in one command. No need to manually run uv lock -U first - the script does it all for you! It also provides better visual feedback with progress indicators and shows the output from the lock update process.

Script

You can find the full script below: