.travis.yml in safe_yaml-0.9.7 vs .travis.yml in safe_yaml-1.0.0rc1

@@ -27,9 +27,10 @@
 matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: rbx-19mode
     - rvm: rbx-18mode
+    - rvm: jruby-head
     - rvm: ree
 
   exclude:
     - rvm: 1.8.7
       env: YAMLER=psych