diff --git a/.travis.yml b/.travis.yml
index 506cde10..e559dcb5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ rvm:
   - 2.0.0
   - 2.1.0
   - 2.1.1
+  - 2.2.2
   - jruby-19mode
 before_install:
  - sudo apt-get update
diff --git a/gollum.gemspec b/gollum.gemspec
index f4a4e6a6..ecfb4818 100644
--- a/gollum.gemspec
+++ b/gollum.gemspec
@@ -35,6 +35,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'minitest-reporters', '~> 0.14.16'
   s.add_development_dependency 'twitter_cldr', '~> 3.2.0'
   s.add_development_dependency 'mocha', '~> 1.1.0'
+  s.add_development_dependency 'test-unit', '~> 3.1.0' if RUBY_VERSION =~ /^2.2/
 
   # = MANIFEST =
   s.files = %w[