.travis.yml in httplog-1.0.1 vs .travis.yml in httplog-1.0.2

@@ -5,10 +5,14 @@
   - "2.4.2"
 gemfile:
   - gemfiles/http2.gemfile
   - gemfiles/http3.gemfile
   - gemfiles/http4.gemfile
+  - gemfiles/rack1.gemfile
+  - gemfiles/rack2.gemfile
+
 # uncomment this line if your project needs to run something other than `rake`:
 script: bundle exec rspec spec
 # workaround for https://github.com/travis-ci/travis-ci/issues/5239:
 before_install:
   - gem install bundler
+  - bundle install