uv tree --outdated runs network requests sequentially, thereby being really slow. For example, project below has 120 packages, but takes 2.4s to resolve on a warm cache.

During the network requests, no progress spinner is shown, so it looks like the command is stuck.

In the image below, each small orange line is a network request. You can click on the image to open it in a new tab and hover over the simple API requests to see which request is running, and that they are running sequentially.

[project]
name = "data-science"
version = "0.1.0"
requires-python = ">=3.13"
dependencies = [
    "beautifulsoup4>=4.12.3,<5",
    "httpx>=0.27.0,<0.28",
    "matplotlib>=3.9.1,<4",
    "numpy>=2.0.1,<3",
    "pandas>=2.2.2,<3",
    "pydantic>=2.8.2,<3",
    "scikit-learn>=1.5.1,<2",
]

[tool.uv]
dev-dependencies = [
    "ruff>=0.7.1,<0.8",
    "jupyter>=1.0.0,<2.0.0",
]

[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"