repos:
-   repo: https://github.com/timothycrosley/isort
    rev: 4.3.21
    hooks:
      - id: isort
        additional_dependencies:
          - toml
-   repo: https://github.com/python/black
    rev: 19.10b0
    hooks:
    - id: black
-   repo: https://gitlab.com/pycqa/flake8
    rev: 3.7.9
    hooks:
    - id: flake8