diff --git a/.travis.yml b/.travis.yml
index 62e47495..12396261 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ rvm:
   - 2.6.5
   - 2.7.0
   - ruby-head
+  - truffleruby-head
 gemfile:
   - gemfiles/rails42.gemfile
   - gemfiles/rails50.gemfile