diff --git a/.travis.yml b/.travis.yml
index 9a64474..92d3676 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ rvm:
   - 2.5.3
   - jruby-head
   - ruby-head
+  - truffleruby-head
 matrix:
   allow_failures:
     - rvm: jruby-head