.travis.yml in gopay-ruby-0.4.0.alpha vs .travis.yml in gopay-ruby-0.4.1

@@ -1,12 +1,12 @@
 cache: bundler
 
 language: ruby
 
 rvm:
-  - 2.4
   - 2.5
   - 2.6
+  - 2.7
   - ruby-head
 
 sudo: false
 
 bundler_args: --without development --retry=3 --jobs=3
\ No newline at end of file