Python Poetry - update -dev dependencies only to latest

Question

How do I get Poetry to update dev dependencies only to latest?

I originally had:

[tool.poetry.dev-dependencies]
pytest = "^4.6"

But I wanted:

[tool.poetry.dev-dependencies]
pytest = "^6.0"

I achieved it by manual editing the pyproject.toml file.

When I ran poetry update it ( brilliantly ) bumped all my normal ( non-dev ) dependencies.

Hilaria

Answer 1

With latest poetry version you should use

poetry add pytest@latest --group dev

Shavonda

Answer 2

Since poetry 1.2 supports plugins, and there is a plugin to update all packages at once, you can

• update poetry

poetry self update

• install up plugin

poetry self add poetry-plugin-up

• up your dev packages to the latest ⬅

poetry up --only=dev --latest

Myself

Answer 3

# June 2024 update
poetry add pytest@latest --group dev

Hilaria

Note this is now deprecated see --group dev instead – Oniskey

Answer 4

When I ran poetry update it ( brilliantly ) bumped all my normal (non-dev ) dependencies

Re manually updating the pyproject.toml file.

You're changes were likely overwritten because you didn't update the .lock file.

Make your changes to the .toml, then run

poetry lock --no-update

Malta