.travis.yml in webtrap-0.1.0 vs .travis.yml in webtrap-0.1.1

@@ -5,10 +5,10 @@
     - ../bundle
 bundler_args: "--standalone --path ../bundle"
 rvm:
   - 2.2.5
   - 2.3.3
-  - 2.4.0
+  - 2.4.3
   - ruby-head
 before_install: gem install bundler
 script:
   - bundle exec rake