diff --git a/pyproject.toml b/pyproject.toml
index 1ace3108..1eeb2631 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ namespaces = true    # enable data directory to be identified
 
 [tool.pytest.ini_options]
 minversion = "6.0"
-addopts    = "-ra -q"
+addopts    = "-ra -n auto"   # -ra: show summary info for all test outcomes; -n auto: run tests in parallel
 testpaths  = ["tests"]
 
 [tool.coverage.run]