.travis.yml in simp-rake-helpers-3.7.0 vs .travis.yml in simp-rake-helpers-4.0.0

- old
+ new

@@ -1,22 +1,27 @@
 language: ruby
 sudo: required
+dist: trusty
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -y rpm
   - rm Gemfile.lock || true
+  - rvm @global do gem uninstall bundler -a -x
+  - rvm @global do gem install bundler -v '~> 1.14.0'
 bundler_args: "--without development --path .vendor"
 notifications:
   email: false
 rvm:
   - 2.1.9
   - 2.3.3
+  - 2.4.1
 script:
   - 'bundle exec rake spec'
 matrix:
   fast_finish: true
   allow_failures:
     - rvm: 2.3.3
+    - rvm: 2.4.1
 before_deploy:
   - 'bundle exec rake clobber'
   - "export GEM_VERSION=`ruby -r ./lib/simp/rake/helpers/version.rb -e 'puts Simp::Rake::Helpers::VERSION'`"
   - '[[ $TRAVIS_TAG =~ ^${GEM_VERSION}$ ]]'
 deploy: