diff --git a/.travis.yml b/.travis.yml
index 814c109..d1af174 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ rvm:
   - 2.1.10
   - 2.2.5
   - 2.3.1
+  - 2.4.1
   - ruby-head
   - jruby-18mode
   - jruby-19mode