Gemfile in simple_aws-1.2.2 vs Gemfile in simple_aws-1.2.3

@@ -1,14 +1,16 @@
 source "https://rubygems.org"
 
+# Nokogiri 1.6 deprecated Ruby 1.8 support, so explicitly set
+# it here for Travis.
+gem "nokogiri", "~> 1.5.0", :platforms => :ruby_18
+
 gemspec
 
 group :development do
   gem "rake"
-  gem "yard"
-  gem "redcarpet"
 end
 
 group :test do
   gem "minitest", :require => false
-  gem "mocha", :require => false
+  gem "mocha",    :require => false
 end