diff --git a/.travis.yml b/.travis.yml
index e868a90..ea933a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ language: ruby
 
 rvm:
   - ruby-head
+  - 2.4.0
   - 2.3.3
   - 2.2
   - 2.1