.travis.yml in validates_timeliness-4.0.2 vs .travis.yml in validates_timeliness-4.1.0

@@ -1,17 +1,27 @@
 language: ruby
+before_install:
+  - gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true
+  - gem install bundler -v '< 2'
+before_script:
+  - bundle install
 cache: bundler
+bundler_args: --verbose
 
-gemfile:
-  - gemfiles/rails_4_0.gemfile
-  - gemfiles/rails_4_1.gemfile
-  - gemfiles/rails_4_2.gemfile
+matrix:
+  include:
+    - rvm: "2.3.7"
+      gemfile: gemfiles/rails_4_0.gemfile
+    - rvm: "2.3.7"
+      gemfile: gemfiles/rails_4_1.gemfile
+    - rvm: "2.3.7"
+      gemfile: gemfiles/rails_4_2.gemfile
+    - rvm: "2.4.6"
+      gemfile: gemfiles/rails_4_2.gemfile
+    - rvm: "2.5.5"
+      gemfile: gemfiles/rails_4_2.gemfile
 
-rvm:
-  - "2.2.3"
-  - "2.3.0"
-
-script: 'bundle exec rake'
+script: 'bundle exec rspec'
 
 notifications:
   email:
     recipients:
       - [e-mail]