diff --git a/.travis.yml b/.travis.yml
index ffd4f39..61bb83d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: ruby
 
 rvm:
-  - 2.3.1
+  - 2.3.3
   - 2.2.5
   - 2.1