Gemfile in page-object-1.1.1 vs Gemfile in page-object-1.2.0

@@ -5,9 +5,10 @@
 gem 'fuubar', '>= 2.0.0'
 gem 'fuubar-cucumber', '>= 0.0.22'
 gem 'rb-fsevent', :require => false if RUBY_PLATFORM =~ /darwin/i
 gem 'growl'
 gem 'guard-rspec'
+gem 'listen', '3.0.8' #Last version that supports ruby 2.0
 gem 'guard-cucumber'
 gem 'net-http-persistent'
 gem 'coveralls', require: false