Ruby 2.4.3 not actually available

The macOS documentation references ruby-2.4.3 as available on the images, but running on the Xcode 10.1 image and my .ruby-version file containing 2.4.3 results in RVM always installing Ruby for every job. Is the documentation inaccurate, or is my .ruby-version incorrect?

Additionally, can we get Ruby 2.5 preinstalled?

I’ve confirmed this isn’t my .ruby-version file, as changing it to ruby-2.4.3 made no difference. So what versions are actually available?

Looks like it’s a documentation issue, as 2.4.5 is what’s available.