message-driver.gemspec in message-driver-0.7.2 vs message-driver.gemspec in message-driver-1.0.0

@@ -16,10 +16,10 @@
   gem.files         = `git ls-files`.split($RS)
   gem.executables   = gem.files.grep(%r{^bin/}).map { |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = %w(lib)
 
-  gem.required_ruby_version = '>= 1.9.3'
+  gem.required_ruby_version = '>= 2.2'
 
   gem.add_development_dependency 'rake'
   gem.add_development_dependency 'rspec', '~> 3.5.0'
   gem.add_development_dependency 'cucumber', '~> 2.4.0'
   gem.add_development_dependency 'aruba', '~> 0.14.1'