diff --git a/.travis.yml b/.travis.yml
index 758d2f1..ff3b26b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: ruby
 rvm:
-  - 2.2.4
   - 2.3.0
+  - 2.4.2
 script: bundle exec rake
 before_install:
   - gem update --system