diff --git a/Gemfile b/Gemfile
index 295d773e..4eaef128 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,7 +27,7 @@ gem 'redcarpet', '>= 3.1', require: false unless RUBY_ENGINE == 'jruby'
 gem 'rubydns', '~> 1.0.1', require: false
 
 # To test javascript
-gem 'poltergeist', '~> 1.7.0', require: false
+gem 'poltergeist', '~> 1.8', require: false
 
 # For less, note there is no compatible JS runtime for windows
 gem 'therubyrhino', '>= 2.0', platforms: :jruby