diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 27c7e01..f6c70c4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,6 +21,8 @@ jobs:
           - { os: macos-latest, ruby: 'truffleruby' }
           - { os: macos-latest, ruby: 'truffleruby-head' }
           - { os: windows-latest, ruby: 'head' }
+          - { os: windows-latest, ruby: 'truffleruby' }
+          - { os: windows-latest, ruby: 'truffleruby-head' }
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3