diff --git a/.travis.yml b/.travis.yml
index d8c3aa8..e154155 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ notifications:
   email: false
 
 rvm:
-  - 2.3.1
+  - 2.3.4
 
 env:
   global: