diff --git a/.travis.yml b/.travis.yml
index 42ee8a7..dcc6420 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ rvm:
   - 2.4
   - 2.3
   - 2.2
+  - truffleruby-head
 matrix:
   allow_failures:
     - rvm: ruby-head