ribimaybe.gemspec in ribimaybe-0.0.2 vs ribimaybe.gemspec in ribimaybe-0.0.3

@@ -2,22 +2,23 @@
 lib = File.expand_path("../lib", __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require "version"
 
 Gem::Specification.new do |spec|
-  spec.name          = "ribimaybe"
-  spec.version       = Ribimaybe::VERSION
-  spec.authors       = ["unsymbol"]
-  spec.email         = ["[e-mail]"]
-  spec.description   = "Maybe Functor, Applicative and Monad"
-  spec.summary       = "A tiny Ruby library that provides a Maybe datatype which is a Functor, Applicative Functor and Monad instance."
-  spec.homepage      = "https://github.com/unsymbol/ribimaybe"
-  spec.license       = "MIT"
+  spec.name                  = "ribimaybe"
+  spec.version               = Ribimaybe::VERSION
+  spec.required_ruby_version = ">= 1.9.3"
+  spec.authors               = ["unsymbol"]
+  spec.email                 = ["[e-mail]"]
+  spec.description           = "Maybe Functor, Applicative and Monad"
+  spec.summary               = "A tiny Ruby library that provides a Maybe datatype which is a Functor, Applicative Functor and Monad instance."
+  spec.homepage              = "https://github.com/unsymbol/ribimaybe"
+  spec.license               = "MIT"
 
-  spec.files         = `git ls-files`.split($/)
-  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
-  spec.require_paths = ["lib"]
+  spec.files                 = `git ls-files`.split($/)
+  spec.executables           = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
+  spec.test_files            = spec.files.grep(%r{^(test|spec|features)/})
+  spec.require_paths         = ["lib"]
 
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "pry"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"