diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7846b8f..017305e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,6 +16,7 @@ jobs:
           - 2.7
           - 3.0
           - head
+          - truffleruby-head
 
     continue-on-error: ${{ endsWith(matrix.ruby, 'head') }}