.travis.yml in regexp-examples-1.4.2 vs .travis.yml in regexp-examples-1.4.3

@@ -1,11 +1,12 @@
 language: ruby
 rvm:
   - 2.0.0
   - 2.1.10
-  - 2.2.8
-  - 2.3.5
-  - 2.4.2
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
   - ruby-head
 matrix:
   allow_failures:
     - rvm: ruby-head