.travis.yml in rack-dev-mark-0.7.7 vs .travis.yml in rack-dev-mark-0.7.8

@@ -1,30 +1,31 @@
 language: ruby
 
 rvm:
-  - 2.2
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
 
 install:
-  - "gem install bundler"
+  - "gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true"
+  - "gem install bundler -v '< 2'"
   - "bundle install --jobs=3 --retry=3"
 
 env:
   -
   - RACK_VERSION=1.3.0
   - RACK_VERSION=1.4.0
   - RACK_VERSION=1.5.0
   - RACK_VERSION=1.6.0
   - RACK_VERSION=2.0.0
-  - RAILS_VERSION=3.2.0
   - RAILS_VERSION=4.0.0
   - RAILS_VERSION=4.1.0
   - RAILS_VERSION=4.2.0
   - RAILS_VERSION=5.0.0
   - RAILS_VERSION=5.1.0
+  - RAILS_VERSION=5.2.0
   - I18N_VERSION=0.6.0
 
 matrix:
   allow_failures:
     - rvm: 2.4
@@ -32,9 +33,13 @@
     - rvm: 2.4
       env: RAILS_VERSION=4.1.0
     - rvm: 2.5
       env: RAILS_VERSION=4.0.0
     - rvm: 2.5
+      env: RAILS_VERSION=4.1.0
+    - rvm: 2.6
+      env: RAILS_VERSION=4.0.0
+    - rvm: 2.6
       env: RAILS_VERSION=4.1.0
 
 script: "bundle exec rake spec"
 
 branches: