diff --git a/.travis.yml b/.travis.yml
index e9fdea0fc..aab9a8413 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,7 @@ rvm:
   - 2.2.7
   - 2.3.4
   - 2.4.1
+  - ruby-head
 # - jruby
 
 # Define how to run your tests (defaults to `bundle exec rake` or `rake` depending on whether you have a `Gemfile`)