diff --git a/.travis.yml b/.travis.yml
index 18e4b577..3d36400e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ rvm:
   - 2.1.1
   - 2.2.2
   - 2.3.0
+  - 2.4.0
   - jruby-19mode
 before_install:
  - sudo apt-get update