diff --git a/.travis.yml b/.travis.yml
index d71f7f5..c4cd7ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,11 +5,14 @@ rvm:
   - 2.0.0
   - 1.9.3
   - rbx-19mode
+  - ruby-head
 services: mongodb
 #script: ./script/rspec-queue-mongoid.rb --format progress spec
 matrix:
   allow_failures:
     - rvm: rbx-19mode
+    - rvm: ruby-head
+
 
 # To stop Travis from running tests for a new commit,
 # add the following to your commit message: [ci skip]
diff --git a/Gemfile b/Gemfile
index a0f14f4..f50f1a6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby (ENV['RUBY_VERSION'] || '2.0.0')
+ruby (ENV['RUBY_VERSION'] || '2.0.0') unless ENV['CI']
 
 RAILS_VERSION = '~> 3.2.14'
 
--
libgit2 0.21.2