I suggested exactly that (for the closely related Deprecation header) to Requests a few years ago, they feel it's the application's responsibility, discussion h

I suggested exactly that (for the closely related Deprecation header) to Requests a few years ago, they feel it's the application's responsibility, discussion here: https://github.com/psf/requests/issues/5724 https://github.com/psf/requests/issues/5724