diff --git a/.travis.yml b/.travis.yml
index f883d4e..7ae7a34 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.3
+  - 2.3.3
   - 2.2
   - 2.0.0
   - 2.1