rails4.gemfile in stripe-rails-1.9.1

- old
+ new

@@ -11,9 +11,9 @@
   gem 'simplecov', require: false
   gem 'stripe-ruby-mock'
   gem 'webmock'
   # Required for system tests
   gem 'capybara'
-  gem 'chromedriver-helper'
+  gem 'webdrivers'
   gem 'puma'                
   gem 'selenium-webdriver'
 end
\ No newline at end of file