.travis.yml in spreadsheet-1.1.4 vs .travis.yml in spreadsheet-1.1.5

@@ -5,12 +5,13 @@
   - gem install bundler
 bundler_args: --binstubs
 script: "bundle exec ruby test/suite.rb"
 rvm:
   - ruby-head
+  - 2.3.3
+  - 2.2.6
+  - 2.1.10
   - 2.0.0
-  - 2.2.3
-  - 2.1.7
   - 1.9.3
   - 1.9.2
   - 1.8.7
   - rbx-19mode
   - rbx-18mode