devise_2fa.gemspec in devise-2fa-0.2.0 vs devise_2fa.gemspec in devise-2fa-0.2.1

@@ -16,15 +16,15 @@
 
   gem.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ['lib']
 
-  gem.add_dependency "rails", "~> 5.0"
+  gem.add_dependency "rails", ">= 4.1", "< 6.1"
 
   gem.add_runtime_dependency 'devise', '~> 4.0'
-  gem.add_runtime_dependency 'rotp', '~> 3.0'
+  gem.add_runtime_dependency 'rotp', '~> 4.1'
   gem.add_runtime_dependency 'rqrcode', '~> 0.10.1'
-  gem.add_runtime_dependency 'symmetric-encryption', '~> 4.2.0'
+  gem.add_runtime_dependency 'symmetric-encryption', '~> 4.3.0'
 
   gem.add_development_dependency 'sqlite3', '~> 1.3.6'
   gem.add_development_dependency 'selenium-webdriver'
   gem.add_development_dependency 'rspec-rails'
   gem.add_development_dependency 'capybara'