.travis.yml in ddr-alerts-1.0.0 vs .travis.yml in ddr-alerts-1.1.0.rc1

@@ -1,7 +1,7 @@
 language: ruby
 rvm:
-  - 2.1
+  - 2.3.1
 script: "bundle exec rake ci"
 cache: 
   - bundler
   - apt
 notifications: