.travis.yml in sidekiq-4.0.1 vs .travis.yml in sidekiq-4.0.2

@@ -2,12 +2,13 @@
 sudo: false
 cache: bundler
 services:
   - redis-server
 rvm:
-  - 2.1
+  - 2.1.7
   - 2.0.0
-  - 2.2
+  - 2.2.4
+  - 2.3.0
   - jruby
   - jruby-head
   - rbx-2
 matrix:
   allow_failures: