.travis.yml in embulk-input-elasticsearch-0.3.2 vs .travis.yml in embulk-input-elasticsearch-0.3.3

@@ -1,8 +1,9 @@
 language: ruby
 cache: bundler
 rvm:
   - jruby-9.0.5.0
+  - jruby-9.1.5.0
   - jruby-head
 jdk:
   - openjdk7
 before_install:
   - gem install bundler