diff --git a/.github/workflows/pybind11.yml b/.github/workflows/pybind11.yml
index 8ccddd1..6402a30 100644
--- a/.github/workflows/pybind11.yml
+++ b/.github/workflows/pybind11.yml
@@ -57,7 +57,8 @@ jobs:
     steps:
     - uses: actions/checkout@v3
       with:
-        repository: pybind/pybind11
+        repository: Skylion007/pybind11
+        ref: py-contains-raise-unhashable
 
     - name: Setup Python ${{ matrix.python }}
       uses: actions/setup-python@v4