paul_revere.gemspec in paul_revere-1.3 vs paul_revere.gemspec in paul_revere-1.4

@@ -2,10 +2,11 @@
 require 'paul_revere/version'
 
 Gem::Specification.new do |s|
   s.name        = 'paul_revere'
   s.version     = PaulRevere::VERSION.dup
+  s.licenses    = ['MIT']
   s.platform    = Gem::Platform::RUBY
   s.authors     = ['Nick Quaranto', 'Matt Jankowski', 'Joe Ferris', 'Christopher Meiklejohn', 'Tammer Saleh', 'Jason Morrison', 'Gabe Berke-Williams']
   s.email       = '[e-mail]'
   s.homepage    = 'https://github.com/thoughtbot/paul_revere'
   s.summary     = 'Simple announcement plugin to include `one off` style announcements in Rails web apps.'
@@ -14,13 +15,12 @@
   s.files         = `git ls-files`.split("\n")
   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.add_dependency('rails', '>= 3.0')
+  s.add_dependency('rails', '~> 4.0')
 
-  s.add_development_dependency('rspec')
-  s.add_development_dependency('rspec-rails')
-  s.add_development_dependency('sqlite3')
-  s.add_development_dependency('appraisal')
-  s.add_development_dependency('generator_spec')
+  s.add_development_dependency('rspec-rails', '~> 3.1')
+  s.add_development_dependency('sqlite3', '~> 1.3')
+  s.add_development_dependency('appraisal', '~> 1.0')
+  s.add_development_dependency('generator_spec', '~> 0.9')
 end