.travis.yml in build-files-1.3.0 vs .travis.yml in build-files-1.4.0

@@ -1,15 +1,14 @@
 language: ruby
-sudo: false
-rvm:
-  - 2.0.0
-  - 2.1.8
-  - 2.2.4
-  - 2.3.0
-  - ruby-head
-  - rbx-2
-env: COVERAGE=true
-matrix:
-  allow_failures:
-    - rvm: rbx-2
-    - rvm: ruby-head
+dist: xenial
+cache: bundler
 
+matrix:
+  include:
+    - rvm: 2.3
+    - rvm: 2.4
+    - rvm: 2.5
+    - rvm: 2.6
+      env: COVERAGE=BriefSummary,Coveralls
+    - rvm: 2.6
+      os: osx
+      env: COVERAGE=BriefSummary,Coveralls