diff --git a/tests/test_conftest_smart_watchdog.py b/tests/test_conftest_smart_watchdog.py
index 0cfa75bf..1c0cf06d 100644
--- a/tests/test_conftest_smart_watchdog.py
+++ b/tests/test_conftest_smart_watchdog.py
@@ -65,7 +65,7 @@ ROOT = Path(__file__).resolve().parent.parent
 sys.path.insert(0, str(ROOT))
 
 WATCHDOG_NAME = "conftest-smart-watchdog"
-PYTEST_FINISHED_TIMEOUT_SECONDS = 300.0
+PYTEST_FINISHED_TIMEOUT_SECONDS = 600.0
 SHUTDOWN_GRACE_SECONDS = 5.0