.travis.yml in multiverse-0.2.0 vs .travis.yml in multiverse-0.2.1

@@ -1,7 +1,7 @@
 language: ruby
-rvm: 2.4.2
+rvm: 2.5.1
 gemfile:
   - Gemfile
 sudo: false
 before_install:
   - gem install bundler
@@ -11,9 +11,10 @@
 notifications:
   email:
     on_success: never
     on_failure: change
 env:
-  - RAILS_VERSION=5.2.0.rc1
-  - RAILS_VERSION=5.1.4
-  - RAILS_VERSION=5.0.6
+  - RAILS_VERSION=5.2.1
+  - RAILS_VERSION=5.2.1 API=t
+  - RAILS_VERSION=5.1.6
+  - RAILS_VERSION=5.0.7
   - RAILS_VERSION=4.2.10