.travis.yml in recite_csv-0.2.0 vs .travis.yml in recite_csv-1.0.0

@@ -1,9 +1,8 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.3.7
-  - 2.4.4
-  - 2.5.1
-before_install: gem install bundler -v 1.16.4
+  - 2.4.6
+  - 2.5.5
+  - 2.6.3
 script:
   - bundle exec rake spec