diff --git a/.travis.yml b/.travis.yml
index b2c0344..4741681 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ rvm:
   - '2.1'
   - '2.2'
   - '2.3.0'
+  - '2.4'
 
 matrix:
   fast_finish: