ruby_badger.gemspec in ruby_badger-0.2.0 vs ruby_badger.gemspec in ruby_badger-4.2.0

@@ -20,16 +20,18 @@
   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", ">= 2.1.4"
-  spec.add_development_dependency "rake"
+  spec.add_runtime_dependency     "rails",   '~> 4.2', '>= 4.2'
 
-  spec.add_development_dependency 'rspec-rails'
-  spec.add_development_dependency 'capybara'
-  spec.add_development_dependency 'factory_girl_rails'
-  spec.add_development_dependency 'fuubar'
-  spec.add_development_dependency 'sass-rails'
+  spec.add_development_dependency "bundler", '~> 1.8', ">= 1.8"
+  spec.add_development_dependency "rake",    '~> 10.4', ">= 10.4"
+
+  spec.add_development_dependency 'rspec-rails',        '~> 2.4', ">= 2.4"
+  spec.add_development_dependency 'capybara',           '~> 2.4', ">= 2.4"
+  spec.add_development_dependency 'factory_girl_rails', '~> 4.5', ">= 4.5"
+  spec.add_development_dependency 'fuubar',             '~> 2.0', ">= 2.0"
+  spec.add_development_dependency 'sass-rails',         '~> 5.0', ">= 5.0"
 
   spec.test_files    = Dir["spec/**/*"]
 end