diff --git a/pytest.ini b/pytest.ini
index 067a2a3c5..6b3a6f3cb 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,9 +1,7 @@
 [pytest]
-addopts = --ignore=setup.py -ra
-# addopts = -ra --ignore=setup.py
+addopts = --ignore=setup.py --doctest-modules --strict-markers -ra
 python_files = *.py
 python_functions = test_*
-#addopts = --doctest-modules --strict-markers
 testpaths = biosimulator_processes/tests
 markers =
     slow: indicates slow tests (deselect with '-m "not slow"')