.travis.yml in fluent-plugin-mysql-prepared-statement-0.0.4 vs .travis.yml in fluent-plugin-mysql-prepared-statement-0.0.5

@@ -1,7 +1,8 @@
 rvm:
-  - 1.9.2
   - 1.9.3
   - 2.0.0
+  - 2.1
+  - 2.2
 gemfile:
   - Gemfile
 script: "rake test"