.travis.yml in avromatic-0.29.1 vs .travis.yml in avromatic-0.30.0

@@ -1,9 +1,10 @@
 language: ruby
 rvm:
-  - 2.4.1
-  - 2.3.4
-  - 2.2.7
+  - 2.5.0
+  - 2.4.3
+  - 2.3.5
+  - 2.2.8
 before_script:
   - bundle exec appraisal install --jobs=3
 script:
   - bundle exec rubocop
   - bundle exec appraisal rails4_1 rake spec