diff --git a/.github/workflows/build_env_run_tests.yml b/.github/workflows/build_env_run_tests.yml
index 83abeaf..1b5a60c 100644
--- a/.github/workflows/build_env_run_tests.yml
+++ b/.github/workflows/build_env_run_tests.yml
@@ -21,7 +21,7 @@ jobs:
           python -m venv env
           source env/bin/activate
           python -m pip install -e .
-          python -m pytest -n auto --cov=nanogpt --cov-report=xml
+          python -m pytest --cov=nanogpt --cov-report=xml
       - name: Upload test coverage report to codecov
         uses: codecov/codecov-action@v4
         with: