diff --git a/.travis.yml b/.travis.yml
index 1ef1f7c..46b42c6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@ rvm:
   - "2.0"
   - "2.1"
   - "2.2"
-  - "2.3.3"
+  - "2.3.4"
   - "2.4.1"
   - ruby-head
 script: bundle exec rake