language: ruby
rvm:
  - 2.3
  - 2.4
  - ruby-head
  - jruby-9
before_install: gem install bundler -v 1.10.6
script: bundle exec rspec

language: ruby
rvm:
  - 2.3
  - 2.4
  - ruby-head
  - jruby
  - rbx
before_install: gem install bundler -v 1.10.6
script: bundle exec rspec

Replace `jruby-9` with `jruby` in build matrix
Replace `jruby-9` with `jruby` in build matrix

Unsure why this suddenly started failing, but it’s probaby better
long-term to use the default provided version.
