Gemfile in hijri-0.2.5 vs Gemfile in hijri-0.4.0

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gemspec
 
-if RUBY_VERSION < '1.8.8'
+if %w(1.8.7 2.2.0).include? RUBY_VERSION
   gem 'minitest'
 end
\ No newline at end of file