Update ruby versions in build matrix

ianfleeton · ianfleeton · commit c43247d20f0c · 2018-01-06T14:04:28.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -2,9 +2,10 @@ before_install:
   - gem install bundler
 
 rvm:
-  - 2.2.7
-  - 2.3.4
-  - 2.4.1
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
 
 env:
   - RAILS_VERSION="~> 4.2"
