Alternative to webrick?

[amunn]

I'm sure most of use who use this theme received the following vulnerability message:

GHSA-6f62-3596-g6w7

Since it looks like webrick is no longer part of Ruby, is there an alternative that can be used?

Edit: It seems this has been fixed? ruby/webrick#146 but it's not clear what end users should do, as I don't see a new version.