diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index efa411d..62d592b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
         - { os: windows-latest, ruby: mingw }
         - { os: windows-latest, ruby: mswin }
         # - { os: ubuntu-latest, ruby: 'jruby-head', bundle: 'bundle exec' }
-        - { os: ubuntu-latest, ruby: 'truffleruby-head' }
+        - { os: ubuntu-latest, ruby: 'truffleruby' }
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v6