.travis.yml in verdict-0.15.1 vs .travis.yml in verdict-0.15.2

@@ -1,12 +1,12 @@
 language: ruby
 cache: bundler
 before_install: gem update bundler
 script: bundle exec rake
 rvm:
-  - 2.0
-  - 2.1
-  - 2.3.3
+  - 2.5
+  - 2.6
+  - 2.7
   - ruby-head
   - jruby
 matrix:
   allow_failures:
     - rvm: ruby-head