diff --git a/kaminari-actionview/kaminari-actionview.gemspec b/kaminari-actionview/kaminari-actionview.gemspec
index b0af5f5..f03db66 100644
--- a/kaminari-actionview/kaminari-actionview.gemspec
+++ b/kaminari-actionview/kaminari-actionview.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'kaminari-actionview provides pagination helpers for your Action View templates'
   spec.homepage      = 'https://github.com/kaminari/kaminari'
   spec.license       = "MIT"
-  s.required_ruby_version = '>= 2.0.0'
+  spec.required_ruby_version = '>= 2.0.0'
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = ["lib"]
diff --git a/kaminari-activerecord/kaminari-activerecord.gemspec b/kaminari-activerecord/kaminari-activerecord.gemspec
index 245488f..81d7766 100644
--- a/kaminari-activerecord/kaminari-activerecord.gemspec
+++ b/kaminari-activerecord/kaminari-activerecord.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'kaminari-activerecord lets your Active Record models be paginatable'
   spec.homepage      = 'https://github.com/kaminari/kaminari'
   spec.license       = "MIT"
-  s.required_ruby_version = '>= 2.0.0'
+  spec.required_ruby_version = '>= 2.0.0'
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = ["lib"]
diff --git a/kaminari-core/kaminari-core.gemspec b/kaminari-core/kaminari-core.gemspec
index 362e6d5..95ff92d 100644
--- a/kaminari-core/kaminari-core.gemspec
+++ b/kaminari-core/kaminari-core.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'kaminari-core includes pagination logic independent from ORMs and view libraries'
   spec.homepage      = 'https://github.com/kaminari/kaminari'
   spec.license       = "MIT"
-  s.required_ruby_version = '>= 2.0.0'
+  spec.required_ruby_version = '>= 2.0.0'
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = ["lib"]
diff --git a/kaminari.gemspec b/kaminari.gemspec
index 6fb2065..76e9a04 100644
--- a/kaminari.gemspec
+++ b/kaminari.gemspec
@@ -3,29 +3,29 @@
 $:.push File.expand_path("../lib", __FILE__)
 require "kaminari/version"
 
-Gem::Specification.new do |s|
-  s.name        = 'kaminari'
-  s.version     = Kaminari::VERSION
-  s.authors     = ['Akira Matsuda', 'Yuki Nishijima', 'Zachary Scott', 'Hiroshi Shibata']
-  s.email       = ['ronnie@dio.jp']
-  s.homepage    = 'https://github.com/kaminari/kaminari'
-  s.summary     = 'A pagination engine plugin for Rails 4+ and other modern frameworks'
-  s.description = 'Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 4+'
-  s.license       = "MIT"
+Gem::Specification.new do |spec|
+  spec.name        = 'kaminari'
+  spec.version     = Kaminari::VERSION
+  spec.authors     = ['Akira Matsuda', 'Yuki Nishijima', 'Zachary Scott', 'Hiroshi Shibata']
+  spec.email       = ['ronnie@dio.jp']
+  spec.homepage    = 'https://github.com/kaminari/kaminari'
+  spec.summary     = 'A pagination engine plugin for Rails 4+ and other modern frameworks'
+  spec.description = 'Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 4+'
+  spec.license       = "MIT"
 
-  s.files         = `git ls-files | egrep -v 'kaminari-(core|actionview|activerecord)' | grep -v '^test'`.split("\n")
-  s.require_paths = ['lib']
+  spec.files         = `git ls-files | egrep -v 'kaminari-(core|actionview|activerecord)' | grep -v '^test'`.split("\n")
+  spec.require_paths = ['lib']
 
-  s.required_ruby_version = '>= 2.0.0'
+  spec.required_ruby_version = '>= 2.0.0'
 
-  s.add_dependency 'activesupport', '>= 4.1.0'
-  s.add_dependency 'kaminari-core', Kaminari::VERSION
-  s.add_dependency 'kaminari-actionview', Kaminari::VERSION
-  s.add_dependency 'kaminari-activerecord', Kaminari::VERSION
+  spec.add_dependency 'activesupport', '>= 4.1.0'
+  spec.add_dependency 'kaminari-core', Kaminari::VERSION
+  spec.add_dependency 'kaminari-actionview', Kaminari::VERSION
+  spec.add_dependency 'kaminari-activerecord', Kaminari::VERSION
 
-  s.add_development_dependency 'test-unit-rails'
-  s.add_development_dependency 'bundler', '>= 1.0.0'
-  s.add_development_dependency 'rake', '>= 0'
-  s.add_development_dependency 'rr', '>= 0'
-  s.add_development_dependency 'capybara', '>= 1.0'
+  spec.add_development_dependency 'test-unit-rails'
+  spec.add_development_dependency 'bundler', '>= 1.0.0'
+  spec.add_development_dependency 'rake', '>= 0'
+  spec.add_development_dependency 'rr', '>= 0'
+  spec.add_development_dependency 'capybara', '>= 1.0'
 end