diff --git a/.travis.yml b/.travis.yml
index 04bd027e..f9654f46 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 language: ruby
+before_install: rvm install ruby-1.9.1-p431
 rvm:
   - "1.9.1"
   - "1.9.2"