.travis.yml in monarchy-2.0.8 vs .travis.yml in monarchy-2.1.0

@@ -1,9 +1,9 @@
 addons:
   code_climate:
     repo_token: 60b8a9fc7e8d659c7dd22ed8912651c35b3ca5eebf1c23d5470308e6a802abbd
 language: ruby
 rvm:
-  - 2.3.1
-before_install: gem install bundler -v 1.12
+  - 2.4.0
+before_install: gem update --system
 after_success:
   - bundle exec codeclimate-test-reporter