Restrict nokogiri on Ruby 2.0

The recent 1.7.0 release of nokogiri dropped support
for unsupported rubies.

1 files changed, 2 insertions, 0 deletions

diff --git a/Gemfile b/Gemfile
index 41a10f6f77..3d0e3b442c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -79,6 +79,8 @@ platforms :ruby do
 
   if RUBY_VERSION < '1.9.3'
     gem 'nokogiri', '>= 1.4.5', '< 1.6'
+  elsif RUBY_VERSION < '2.1.0'
+    gem 'nokogiri', '>= 1.6.0', '< 1.7'
   else
     gem 'nokogiri', '>= 1.6.0'
   end