The previous version of ruby 1.9.3 was outdated. However, the way it was packaged, it included wrapper scripts which were used by the Foreman. This meant that many bugfixes present in later patch levels of ruby 1.9.3 were not available.
This was fixed by separating the wrapper scripts into their own package. This allows later versions of ruby 1.9.3 to be provided (in this case, patch level 448), which contain numerous fixes. Now, when using the Foreman, you will see two packages (ruby193-ruby and ruby193-ruby-wrapper) instead of one.