DeprecationWarning in api_client and rest: getheader and getheaders

Hi dear Xero team,

We are receiving the following warning from your codebase:

DeprecationWarning: HTTPResponse.getheaders() is deprecated and will be removed in urllib3 v2.6.0.
Instead access HTTPResponse.headers directly.

I have noticed the usage in files:

rest.py:48: return self.urllib3_response.getheaders()
rest.py:52: return self.urllib3_response.getheader(name, default)
api_client/__init__.py:221: return (return_data, response_data.status, response_data.getheaders())
api_client/__init__.py:604: content_disposition = response.getheader("Content-Disposition")
exceptions/__init__.py:38: return self.http_resp.getheaders() if self.http_resp else None

For being able to upgrade urllib3 it is very important to keep the codebase up-to-date. Could you please fix the issue.

Best regards,
Sergei

PETOSS-791

Thanks for raising an issue, a ticket has been created to track your request

How to see the progress? Any updates here?

urllib3 v2.5.0 has vulnerability that's fixed upgrading to 2.6.0

Unfortunately, this breaks xero-python functionality because of using methods in question.

any progress? this breaks xero-python functionality and blocks to a urllib3 version with vulnerabilities

urllib3 should also be version pinned in requirements.txt to avoid version conflicts in projects consuming this one

This is breaking deployments and requiring workarounds because it has now been removed in https://github.com/urllib3/urllib3/blob/main/CHANGES.rst#260-2025-12-05 . Any update?

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