Hello When searching RSpec documentation online. I often end up on a page documentation of RSpec gems bellow 2.99. I was thinking about the best way to mark our doc as deprecated. Few ideas: - Add a block to tell the reader that he/she is not on the last version with an easy link to jump to current. We can see this on PostgreSQL <img width="1252" alt="Capture d’écran 2020-10-18 à 23 00 38" src="https://user-images.githubusercontent.com/8417720/96385696-d964e700-1195-11eb-99b4-7a368f89ab18.png"> - Maybe too powerful... Disable search engine indexing on old version? The best should be to change the SEO but I do not have those magic capabilities. - Set a new documentation for RSpec 4? [VCR had a discussion](https://github.com/vcr/vcr/issues/755).