diff --git a/.travis.yml b/.travis.yml
index 6d3fbbd..fe3de95 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ sudo: false
 cache: bundler
 language: ruby
 rvm:
-- '2.2'
+- 2.3.1
 env:
   global:
   - secure: NDa++p5J73q5JjH25x8p1IJiCZXHPq4kd2n/ChAHrda+va/+d5cxtIHUDAFtfKJAeIr9W2yAjCm/VBsncZbxAbQai1y6zF9hU/aoWOyYxFWJkB65Off5WiYnWYB9gzDteHzAcXcsLds3KOse4MQPkxmdh0Q9bmK/I/IaPojjajP2bwAYmSIjj4jKLIGKS6VWx1MlyZk2ZHY0x++MChz6D/jTPeQDZgm8ubZIP+I+BoAl7VSZ+5ZhfpGcxE8zEC1iofbyT7JAKQC0FD3u/zHrZzFeqRSXw7Yt+TmdPNr5yzZZyOhez0BVpkDAxPbhZpxcIi4qVeiZ05yS8eu9auLZ7bP05CG3VOWZpGPpzTAh1Z60o0ysGbtSbHuexUR6bxztSvUdEGSgrEhNvPjZvfDdWH/zrVFQxo39t8hvX9n3KmInDw6WKcS0Q7yZPekZK0R+4HrpGvG+QQZkbWvWPX0JPyzT17Az+1kGWfmsFI/XJby9hYvPiiYX6WOhI8Kls4BrFCCKIScW3OE0SIO5JasJ+SeqFGifCppEeuKsJ8bK61l1iurTTYoIl8e69E5Sn2yXa5rfMuKDvRyzGPQFWKw8o+saGeh5A+HOufBM6Bm85XwtAuRq2o9KloSqYhITnfWoj6xWckUuOrCSKsJrtl5QkuG45uaImPv11wiPwz4Sag0=