Gemfile in watir-6.16.5 vs Gemfile in watir-6.17.0

@@ -1,8 +1,10 @@
-source 'http://rubygems.org'
+source 'https://rubygems.org'
 
 gem 'webidl', path: File.expand_path('../webidl') if ENV['LOCAL_WEBIDL']
 
 gem 'selenium-webdriver', path: File.expand_path('../selenium/build/rb') if ENV['LOCAL_SELENIUM']
+
+gem 'ffi' if Gem.win_platform? # For selenium-webdriver on Windows
 
 # Specify your gem's dependencies in watir.gemspec
 gemspec