repos:
-   repo: https://github.com/timothycrosley/isort
    rev: 4.3.21
    hooks:
      - id: isort
        language_version: python3.6
        additional_dependencies:
          - toml
-   repo: https://github.com/python/black
    rev: 19.10b0
    hooks:
    - id: black
      language_version: python3.6