diff --git a/.travis.yml b/.travis.yml
index cd02066..beda6ec 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
-  - jruby-18mode # JRuby in 1.8 mode
-  - jruby-19mode # JRuby in 1.9 mode
-  - rbx-18mode
-  # - rbx-19mode
+#  - jruby-18mode # JRuby in 1.8 mode
+#  - jruby-19mode # JRuby in 1.9 mode
+#  - rbx-18mode
+#  - rbx-19mode
 script: bundle exec rspec spec