Use ruby 2.3.1 for travis

diff --git a/.travis.yml b/.travis.yml
index d8a94982c86a88d44932744ba8c09c037e23adab..b513cbf4c0034d62824c4de663f5885cd757c64c 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ sudo: false
 language: ruby
 cache: bundler
 rvm:
-  - 2.1.6
+  - 2.3.1
 script:
   - bundle exec rubocop -f fuubar
   - bundle exec foodcritic -f any cookbooks