diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1cfbcbf..777e672 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,11 @@ jobs:
         ruby-version:
           - "3.2"
           - "3.3"
+          - "truffleruby-head"
           - "head"
+        exclude:
+          - { os: "windows-latest", ruby-version: "truffleruby-head" }
+
     runs-on: ${{ matrix.os }}
     steps:
       - uses: "actions/checkout@v4"