diff --git a/.travis.yml b/.travis.yml
index b7a51162d8..42df522f78 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,8 @@ matrix:
     - { rvm: rbx-19mode, gemfile: test/gemfiles/Gemfile.rails-3.1.x }
     - { rvm: rbx-19mode, gemfile: test/gemfiles/Gemfile.rails-3.2.x }
 
+    - { rvm: 1.9.2, gemfile: test/gemfiles/Gemfile.rails-4.0.x }
+
     - { rvm: 2.0.0, gemfile: test/gemfiles/Gemfile.rails-3.0.x }
     - { rvm: 2.0.0, gemfile: test/gemfiles/Gemfile.rails-3.1.x }
     - { rvm: 2.0.0, gemfile: test/gemfiles/Gemfile.rails-3.2.x }