diff --git a/.github/workflows/test-macos.yml b/.github/workflows/test-macos.yml
new file mode 100644
index 0000000..91e2faa
--- /dev/null
+++ b/.github/workflows/test-macos.yml
@@ -0,0 +1,28 @@
+name: tests
+
+on:
+  pull_request:
+    branches:
+      - hauptzweig
+
+jobs:
+  run_tests:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.11
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          # Use "eager" update strategy in case cached dependencies are outdated
+          # Using regular install NOT editable install: see GH #3020
+          pip install --upgrade --upgrade-strategy eager torch scikit-learn pytest
+      - name: Test with pytest
+        # Ensure we avoid adding current working directory to sys.path:
+        # - Use "pytest" over "python -m pytest"
+        # - Use "append" import mode rather than default "prepend"
+        run: >
+          pytest bug-121101.py
diff --git a/bug-121101.py b/bug-121101.py
new file mode 100644
index 0000000..25f14dd
--- /dev/null
+++ b/bug-121101.py
@@ -0,0 +1,10 @@
+import time
+
+import torch
+from sklearn.datasets import fetch_california_housing
+
+
+def test_something():
+    X, y = fetch_california_housing(return_X_y=True)
+    torch.tensor(X)
+    time.sleep(3)