.travis.yml in asciidoctor-bibliography-0.5.1 vs .travis.yml in asciidoctor-bibliography-0.6.0

@@ -1,8 +1,8 @@
 sudo: false
 language: ruby
 rvm:
-  -  2.3.0
+  -  2.3
 before_script:
   - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
   - chmod +x ./cc-test-reporter
   - ./cc-test-reporter before-build
 script: