diff --git a/.github/workflows/build_and_test.yaml b/.github/workflows/build_and_test.yaml
index caf2e526..636e1229 100644
--- a/.github/workflows/build_and_test.yaml
+++ b/.github/workflows/build_and_test.yaml
@@ -57,8 +57,7 @@ jobs:
           CIBW_BUILD: "cp3${{ matrix.python-version }}-*"
           CIBW_SKIP: "*-win32 *-musllinux* *i686 *ppc64le *s390x *aarch64"
           CIBW_PLATFORM: ${{ matrix.platform || matrix.os }}
-          # TODO: why doesn't pytest work with cibuildwheel?
-          CIBW_TEST_COMMAND: "pytest -v"
+          CIBW_TEST_COMMAND: "pytest -v {project}/python/fastsim/tests"
           # CIBW_TEST_COMMAND: "python -m unittest discover {project}/python/fastsim/tests"
           CIBW_ARCHS_MACOS: "universal2"
           # see https://cibuildwheel.readthedocs.io/en/stable/faq/#universal2