rack-dev-mark.gemspec in rack-dev-mark-0.7.4 vs rack-dev-mark.gemspec in rack-dev-mark-0.7.5

@@ -14,9 +14,11 @@
   gem.files       = `git ls-files`.split("\n")
   gem.test_files  = `git ls-files -- {test,spec,features}/*`.split("\n")
   gem.executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   gem.require_paths = ['lib']
 
+  gem.required_ruby_version = '>= 2.0.0'
+
   gem.add_dependency "rack", ">= 1.1"
 
   gem.add_development_dependency "rake"
   gem.add_development_dependency "rspec", ">= 3.0"
   gem.add_development_dependency "coveralls"