diff --git a/.travis.yml b/.travis.yml
index f759651..aa4557a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,5 +17,6 @@ matrix:
       env: JRUBY_OPTS="$JRUBY_OPTS --debug"
   allow_failures:
     - rvm: jruby-head
+    - rvm: rbx-2
     - rvm: ruby-head
   fast_finish: true