.travis.yml in fluent-plugin-elapsed-time-0.0.5 vs .travis.yml in fluent-plugin-elapsed-time-0.0.6

@@ -1,6 +1,6 @@
 rvm:
-  - 1.9.2
   - 1.9.3
   - 2.0.0
+  - 2.1.*
 gemfile:
   - Gemfile