diff --git a/.travis.yml b/.travis.yml
index 6d926f32..8e18c0ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,8 @@ rvm:
   - ree
   - 1.9.3
   - 2.0.0
+  - 2.1
+  - 2.2
   - ruby-head
   - jruby-18mode
   - jruby-19mode
diff --git a/Gemfile b/Gemfile
index 0977943f..0fae04b8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,6 +11,7 @@ group :development do
   gem "RedCloth", RUBY_PLATFORM == 'java' ? ">= 4.2.7" : ">= 4.0.3"
   gem "term-ansicolor"
   gem "shoulda-context"
+  gem "test-unit"
   gem "json" if RUBY_VERSION < '1.9'
   gem "rdoc"
 end
diff --git a/README.markdown b/README.markdown
index e23f6036..15b34470 100644
--- a/README.markdown
+++ b/README.markdown
@@ -16,7 +16,7 @@ You put your code in, and you get it back colored; Keywords, strings, floats, co
 
 ### Dependencies
 
-CodeRay needs Ruby 1.8.7, 1.9.3 or 2.0. It also runs on JRuby.
+CodeRay needs Ruby 1.8.7, 1.9.3 or 2.0+. It also runs on JRuby.
 
 ## Example Usage