.travis.yml in opal-rails-0.9.0 vs .travis.yml in opal-rails-0.9.1

- old
+ new

@@ -4,12 +4,12 @@
 
 cache:
   bundler: true
 
 rvm:
-  - 2.3.0
-  - 2.2.3
-  - 2.1.6
+  - 2.3.3
+  - 2.2.4
+  - 2.1.10
   - 2.0.0
 
 before_script:
   - "export DISPLAY=:99.0"
   - "sh -e /etc/init.d/xvfb start"