.travis.yml in fluent-plugin-map-0.2.1 vs .travis.yml in fluent-plugin-map-0.3.0

@@ -3,10 +3,10 @@
   - gem update bundler
 
 rvm:
   - 2.1
   - 2.2
-  - 2.3.3
-  - 2.4.0
+  - 2.3
+  - 2.4.3
+  - 2.5.0
 gemfile:
-  - gemfiles/fluentd_0_14.gemfile
   - Gemfile