diff --git a/.travis.yml b/.travis.yml
index 89a6a66e..1a6912f4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,8 @@ rvm:
  - 2.0.0
  - 2.1
  - 2.2
+ - 2.3
+ - 2.4
 addons:
   firefox: 45.8.0esr
 env: