cannot import name 'field' from 'attr'

[sobolevn]

+ dotenv-linter config/.env config/.env.template
Traceback (most recent call last):
  File "/usr/local/bin/dotenv-linter", line 5, in <module>
    from dotenv_linter.cli import cli
  File "/usr/local/lib/python3.9/site-packages/dotenv_linter/cli.py", line 11, in <module>
    from dotenv_linter.checker import DotenvFileChecker
  File "/usr/local/lib/python3.9/site-packages/dotenv_linter/checker.py", line 8, in <module>
    from dotenv_linter.grammar.fst import Module
  File "/usr/local/lib/python3.9/site-packages/dotenv_linter/grammar/fst.py", line 22, in <module>
    from attr import dataclass, field
ImportError: cannot import name 'field' from 'attr' (/usr/local/lib/python3.9/site-packages/attr/__init__.py)