> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/help-center/help-topics/data-api-sdk/mobile-sdk-setup-permissions-and-crashes/stale-sdk-version-broke-compat.md).

# Why did my Python SDK data pulls stop working?

If data pulls suddenly stop on an older Terra client SDK version, the cause is usually an API change that broke compatibility with the outdated SDK, not…

If data pulls suddenly stop on an older Terra client SDK version, the cause is usually **an API change that broke compatibility with the outdated SDK**, not downtime.

Two ways to fix it:

* **Upgrade to the latest version**, e.g. `pip install --upgrade terra-python`.
* As a quick fix, **call the REST API directly** with your `dev-id` and `x-api-key` headers.