diff --git a/.travis.yml b/.travis.yml
index 81e55ef..df86224 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,9 +2,13 @@ services: mongodb
 
 script: "bundle exec rake spec"
 
+before_install:
+  - gem install nokogiri ffi do_sqlite3 -- --with-cflags='--std=gnu99'
+
 rvm:
   - 1.8.7
   - 1.9.3
+  - ruby-head
 
 gemfile:
   - gemfiles/active_record_32.gemfile