JRuby 9.1.9.0 now available

Change effective on 17 May 2017

The Ruby stack now supports JRuby 9.1.9.0. To use this release, add the following code to your Gemfile:

ruby '2.3.3', :engine => 'jruby', :engine_version => '9.1.9.0'

The JRuby 9.1.9.0 release notes can be found on the JRuby website.