.travis.yml in achecker-0.0.5 vs .travis.yml in achecker-0.0.6

@@ -1,11 +1,11 @@
 language: ruby
 rvm:
-- 2.1.10
-- 2.2.10
 - 2.3.8
 - 2.4.10
 - 2.5.8
+- 2.6.6
+- 2.7.1
 - ruby-head
 - jruby-19mode
 - jruby
 - jruby-head
 matrix: