diff --git a/gemfiles/Gemfile.rails-3.0 b/gemfiles/Gemfile.rails-3.0
index b0658fa..f7ba702 100644
--- a/gemfiles/Gemfile.rails-3.0
+++ b/gemfiles/Gemfile.rails-3.0
@@ -6,5 +6,6 @@ gem 'nokogiri', '~> 1.5.0'
 gem 'capybara', '~> 2.0.0'
 # stick to versions that work under Ruby 1.8 for now
 gem 'mime-types', '< 2'
+gem 'rubyzip', '< 1'
 
 gemspec :path => '..'
diff --git a/gemfiles/Gemfile.rails-3.1 b/gemfiles/Gemfile.rails-3.1
index d11c660..f2ce4f2 100644
--- a/gemfiles/Gemfile.rails-3.1
+++ b/gemfiles/Gemfile.rails-3.1
@@ -6,5 +6,6 @@ gem 'nokogiri', '~> 1.5.0'
 gem 'capybara', '~> 2.0.0'
 # stick to versions that work under Ruby 1.8 for now
 gem 'mime-types', '< 2'
+gem 'rubyzip', '< 1'
 
 gemspec :path => '..'
diff --git a/gemfiles/Gemfile.rails-3.2 b/gemfiles/Gemfile.rails-3.2
index 0003b8f..a9dfe9a 100644
--- a/gemfiles/Gemfile.rails-3.2
+++ b/gemfiles/Gemfile.rails-3.2
@@ -6,5 +6,6 @@ gem 'nokogiri', '~> 1.5.0'
 gem 'capybara', '~> 2.0.0'
 # stick to versions that work under Ruby 1.8 for now
 gem 'mime-types', '< 2'
+gem 'rubyzip', '< 1'
 
 gemspec :path => '..'