Square Python API "unexpected keyword argument" TypeError despite being expected

Question

I'm trying to use Square's Python API to GET some data using the example code they provide in their GitHub repo:

from square.client import Client
 
# Create an instance of the API Client 
# and initialize it with the credentials 
# for the Square account whose assets you want to manage
 
client = Client( access_token='{ACCESS_TOKEN}',
    environment='production'
)
 
# Get an instance of the Square API you want call
api_locations = client.locations

Running this gives the following error (last few lines only):

File "/home/user/.local/lib/python3.8/site-packages/square/http/requests_client.py", line 67, in create_default_http_cient
    retries = Retry(total=max_retries, backoff_factor=backoff_factor,
TypeError: __init__() got an unexpected keyword argument 'allowed_methods'

Which confuses me because my understanding is that this instantiates a urllib3 Retry object which according to the liburl3 GitHub repo does seem to have an allowed_methods keyword argument.

I've already checked the squareup package requirements.