Use the latest Rubies on Travis

koic · koic · commit 2b7446865c87 · 2017-05-03T15:42:22.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,8 +5,9 @@ rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.10
-  - 2.2.5
-  - 2.3.1
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
   - ruby-head
 gemfile:
   - gemfiles/rails_4.0.gemfile
