.travis.yml in puppet-resource_api-1.5.0 vs .travis.yml in puppet-resource_api-1.6.0

@@ -52,9 +52,11 @@
       env: PUPPET_GEM_VERSION='~> 4.8.0'
     - rvm: 2.1.9
       env: PUPPET_GEM_VERSION='~> 4.7.0'
     - rvm: 2.5.1
       env: PUPPET_GEM_VERSION='https://github.com/puppetlabs/puppet.git#master'
+    - rvm: 2.5.1
+      env: PUPPET_GEM_VERSION='https://github.com/puppetlabs/puppet.git#6.0.x'
 notifications:
   hipchat:
     rooms:
       secure: 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
     template: