.travis.yml in gush-0.4.1 vs .travis.yml in gush-1.0.0

@@ -1,10 +1,10 @@
 language: ruby
 script: "bundle exec rspec"
 rvm:
-  - 2.0.0
-  - 2.1.6
   - 2.2.2
+  - 2.3.4
+  - 2.4.1
 services:
   - redis-server
 email:
   recipients:
     - [e-mail]