diff --git a/.travis.yml b/.travis.yml
index c9a9037..561136b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ os:
   - linux
   - osx
 rvm:
-  - 2.2.6
   - 2.3.3
+  - 2.4.0
 notifications:
   webhooks:
     urls: