diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 39fb9e2..227d90d 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,7 +11,7 @@ jobs:
       - run: pipx install poetry
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.9
+          python-version: 3.11
           cache: 'poetry'
       - run: poetry install --with dev
       - run: poetry run pytest
diff --git a/tests/test_config.py b/tests/test_config.py
index 475d647..4940b01 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -42,8 +42,6 @@ def _test(self):
                 _ = Config(precision="foat")
             with self.assertRaises(ConfigValidationError):
                 _ = Config(use_exact_eigenvectors="foat", sigma_threshold=False)
-            with self.assertRaises(ConfigValidationError):
-                _ = Config(torch_compile_backend="some garbage backend xxx")
     
     t = _Test()
     t._test()