.travis.yml in shoryuken-3.2.0 vs .travis.yml in shoryuken-3.2.1

@@ -1,12 +1,13 @@
 language: ruby
 
 rvm:
   - 2.0.0
   - 2.1.10
-  - 2.2.0
-  - 2.3.3
-  - 2.4.1
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
 
 notifications:
   email:
     on_success: change
     on_failure: always