.travis.yml in executrix-1.4.0 vs .travis.yml in executrix-1.4.1

@@ -1,11 +1,13 @@
+sudo: false
 language: ruby
 cache: bundler
 bundler_args: --without documentation production
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.3
+  - 2.1.5
+  - 2.2.1
   - jruby-19mode
   - rbx
   - ruby-head
   - jruby-head
 matrix: