.travis.yml in secondbase-2.1.6 vs .travis.yml in secondbase-2.2.0

@@ -1,15 +1,15 @@
 sudo: false
 cache: bundler
 rvm:
-  - 2.2.2
-  - 2.3.1
+  - 2.5.3
+services:
+  - mysql
 gemfile:
-  - gemfiles/rails40.gemfile
-  - gemfiles/rails41.gemfile
-  - gemfiles/rails42.gemfile
   - gemfiles/rails50.gemfile
   - gemfiles/rails51.gemfile
+  - gemfiles/rails52.gemfile
+  - gemfiles/rails60.gemfile
 install:
   - gem install bundler
   - bundle --version
   - bundle install
 script: