.travis.yml in rbnacl-3.0.0 vs .travis.yml in rbnacl-3.0.1

@@ -1,10 +1,10 @@
 script: "LD_LIBRARY_PATH=lib bundle exec rake ci"
 
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.0
+  - 2.1.1
   - ruby-head
   - jruby
   - jruby-head
   - rbx
   - rbx-head