.travis.yml in trailer_vote-fixtures-1.3.1 vs .travis.yml in trailer_vote-fixtures-1.3.2

@@ -4,45 +4,50 @@
     - language: ruby
       cache: bundler
       rvm: 2.4
       before_install:
         - gem update --system
+        - gem install bundler -v 2.0.1
         - gem --version
       install:
         - bundle install --with development --jobs=3 --retry=3 --path=${BUNDLE_PATH:-vendor/bundle}
 
     - language: ruby
       cache: bundler
       rvm: 2.5
       before_install:
         - gem update --system
+        - gem install bundler -v 2.0.1
         - gem --version
       install:
         - bundle install --with development --jobs=3 --retry=3 --path=${BUNDLE_PATH:-vendor/bundle}
 
     - language: ruby
       cache: bundler
       rvm: 2.6
       before_install:
         - gem update --system
+        - gem install bundler -v 2.0.1
         - gem --version
       install:
         - bundle install --with development --jobs=3 --retry=3 --path=${BUNDLE_PATH:-vendor/bundle}
 
     - language: ruby
       cache: bundler
       rvm: rbx-3
       before_install:
         - gem update --system
+        - gem install bundler -v 2.0.1
         - gem --version
       install:
         - bundle install --with development --jobs=3 --retry=3 --path=${BUNDLE_PATH:-vendor/bundle}
 
     - language: ruby
       cache: bundler
       rvm: ruby-head
       before_install:
         - gem update --system
+        - gem install bundler -v 2.0.1
         - gem --version
       install:
         - bundle install --with development --jobs=3 --retry=3 --path=${BUNDLE_PATH:-vendor/bundle}
 
     - language: node_js