.travis.yml in kuende-fakeredis-0.6.0 vs .travis.yml in kuende-fakeredis-0.10.0

@@ -1,11 +1,12 @@
 language: ruby
 before_install:
   - travis_retry gem install bundler
 rvm:
-  - 1.9.3
-  - 2.0.0
   - 2.1
+  - 2.2
+  - 2.3.1
+  - 2.4
   - ruby-head
   - jruby
   - rbx-2
 gemfile:
   - Gemfile