diff --git a/impressionist.gemspec b/impressionist.gemspec
index ccec4c3..92813c6 100644
--- a/impressionist.gemspec
+++ b/impressionist.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = Gem::Requirement.new('>= 1.3.6') if s.respond_to? :required_rubygems_version=
 
   s.add_dependency 'httpclient', '~> 2.2'
-  s.add_dependency 'nokogiri', '~> 1.5'
+  s.add_dependency 'nokogiri', '~> 1.6'
 
   s.add_development_dependency 'bundler', '~> 1.0'
 end