md2man.gemspec in md2man-1.4.0 vs md2man.gemspec in md2man-1.4.1

@@ -14,9 +14,10 @@
   s.files         = `git ls-files`.split("\n") + Dir['man/man?/*.?']
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ['lib']
 
+  s.required_ruby_version = '>= 1.9.1'
   s.add_runtime_dependency 'binman', '~> 3.0'
   s.add_runtime_dependency 'redcarpet', '~> 2.1'
   s.add_development_dependency 'minitest', '~> 4.0'
   s.add_development_dependency 'rake', '~> 0.9.2.2'
 end