# Haskell Language Server 2.15.0.0 release > Source: > Published: 2026-10-22 08:20:08+00:00 a very silly question, but the UI of RTD is confusing to me how do I know that what is the version number of `alias=stable` or `alias=latest` ? like `stable` points to which version ? [haskell-language-server — haskell-language-server 2.15.0.0 documentation](https://haskell-language-server.readthedocs.io/en/stable/) - this URL showing docs for `x1.y1.z1` or `x2.y2.z2` ? 1 Like I asked LLM, it said that if you hover on the the Tab, to see the Title, you can know so I am on the link [haskell-language-server — haskell-language-server 2.15.0.0 documentation](https://haskell-language-server.readthedocs.io/en/stable/) and in title I see `haskell-language-server - haskell-language-server 2.15.0.0 documentation` Is this the relaible way to know [dyniec](https://discourse.haskell.org/u/dyniec) 4 I would guess that stable points to latest versioned docs release, and latest points to latest docs release (i.e. `master` branch of the repo). [fendor](https://discourse.haskell.org/u/fendor) 5 Good question, and I don’t have a good answer I can tell from the build logs That stable is the last release and latest is master. Perhaps we want to document this in our read-the-docs