mutant.gemspec in mutant-0.3.2 vs mutant.gemspec in mutant-0.3.3

@@ -16,13 +16,15 @@
   gem.files            = `git ls-files`.split("\n")
   gem.test_files       = `git ls-files -- spec/{unit,integration}`.split("\n")
   gem.extra_rdoc_files = %w[TODO LICENSE]
   gem.executables      = %w[mutant]
 
+  gem.required_ruby_version = '>= 1.9.3'
+
   gem.add_runtime_dependency('parser',              '~> 2.1.0')
   gem.add_runtime_dependency('procto',              '~> 0.0.2')
   gem.add_runtime_dependency('abstract_type',       '~> 0.0.7')
-  gem.add_runtime_dependency('unparser',            '~> 0.1.6')
+  gem.add_runtime_dependency('unparser',            '~> 0.1.8')
   gem.add_runtime_dependency('ice_nine',            '~> 0.9')
   gem.add_runtime_dependency('descendants_tracker', '~> 0.0.1')
   gem.add_runtime_dependency('adamantium',          '~> 0.1')
   gem.add_runtime_dependency('equalizer',           '~> 0.0.7')
   gem.add_runtime_dependency('inflecto',            '~> 0.0.2')