Cannot suppress warnings from urllib3 when imported by pdoc3

[pceBuildMaster]

Expected Behavior

Calling pdoc with python env variable set to ignore works:

PYTHONWARNINGS="ignore::DeprecationWarning" pdoc --output-dir "$outdir" --html $py_files

Actual Behavior

On every call to pdoc get the warning:

...\lib/python3.8/site-packages/urllib3/util/retry.py:38: DeprecationWarning: Using 'Retry.DEFAULT_METHOD_WHITELIST' is deprecated and will be removed in v2.0. Use 'Retry.DEFAULT_METHODS_ALLOWED' instead
  warnings.warn(

Steps to Reproduce

1. import urllib3 in python module
2. run pdoc on module
3. observe warning from urllib3 in pdoc output on STDERR

Additional info

• pdoc version: 0.9.2