Application dependency information storage in requirements.txt is becoming less popular, falling 7 percentage points compared to last year. In the same time, pyproject.toml has risen by the same amount and is now used by a third of Python developers. (poetry.lock usage also rose) A lot of steady work went into pyproject.toml reaching feature parity, and it is now [supported directly in pip](https://pip.pypa.io/en/stable/reference/build-system/pyproject-toml/). 45% of Python developers use tools for managing the versions of application dependencies. Poetry, pipenv remain the top picks