I have noticed that the version selector of the doc is not properly set.

I've seen that on RTD we are missing the builds to make this really work.

https://readthedocs.org/projects/salib/versions/

We should have a version for each version we want to have in the selector, and it should match the file https://github.com/SALib/SALib/blob/main/docs/_static/version_switcher.json

I don't have access to RTD so cannot help much more than updating the JSON once I know what is wanted.