diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e83e7bff7..d996a6ec0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -96,7 +96,7 @@ jobs:
           cargo run -- build -i pypy3 -m test-crates/pyo3-mixed-submodule/Cargo.toml
           pypy3 -m pip install --force-reinstall --no-index --find-links test-crates/pyo3-mixed-submodule/target/wheels pyo3-mixed-submodule
           pypy3 -m pip install pytest
-          pypy3 -m pytest test-crates/pyo3-mixed-submodule/test_pyo3_mixed_submodule.py
+          pypy3 -m pytest test-crates/pyo3-mixed-submodule/tests/
 
   test-auditwheel:
     name: Test Auditwheel
diff --git a/test-crates/pyo3-mixed-submodule/Readme.md b/test-crates/pyo3-mixed-submodule/Readme.md
index 5cd1839da..852796300 100644
--- a/test-crates/pyo3-mixed-submodule/Readme.md
+++ b/test-crates/pyo3-mixed-submodule/Readme.md
@@ -27,4 +27,4 @@ Run it:
 tox
 ```
 
-The tests are in `test_pyo3_mixed_submodule.py`, while the configuration is in tox.ini
+The tests are in `tests/test_pyo3_mixed_submodule.py`, while the configuration is in tox.ini
diff --git a/test-crates/pyo3-mixed-submodule/test_pyo3_mixed_submodule.py b/test-crates/pyo3-mixed-submodule/tests/test_pyo3_mixed_submodule.py
similarity index 100%
rename from test-crates/pyo3-mixed-submodule/test_pyo3_mixed_submodule.py
rename to test-crates/pyo3-mixed-submodule/tests/test_pyo3_mixed_submodule.py
diff --git a/test-crates/pyo3-mixed-submodule/tox.ini b/test-crates/pyo3-mixed-submodule/tox.ini
index fd19ca2b2..421774193 100644
--- a/test-crates/pyo3-mixed-submodule/tox.ini
+++ b/test-crates/pyo3-mixed-submodule/tox.ini
@@ -4,4 +4,4 @@ isolated_build = True
 
 [testenv]
 deps = pytest
-commands = pytest
\ No newline at end of file
+commands = pytest tests/