diff --git a/setup.cfg b/setup.cfg
index 3f28e70..b6179d6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,4 +2,4 @@
 test=pytest 
 
 [tool:pytest]
-addopts = --timeout=120 --timeout-method=thread -n auto --cov=careless --cov-config=.coveragerc --cov-report xml
+addopts = -x --timeout=120 --timeout-method=thread -n auto --cov=careless --cov-config=.coveragerc --cov-report xml