diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 080c465..680f039 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby-version: ['3.2', '3.1', '3.0', '2.7', '2.3']
+        ruby-version: ['3.2', '3.0', '2.7', '2.3', truffleruby-head]
 
     steps:
       - uses: actions/checkout@v3