diff --git a/tasks.py b/tasks.py
index 443d21e..f095f51 100644
--- a/tasks.py
+++ b/tasks.py
@@ -137,7 +137,7 @@ def docs(ctx, python_version=None):
 @invoke.task
 def test(ctx):
     print_message('test'.format(), color=Fore.BLUE, bright=True)
-    cmd = 'pytest --cov=qmxgraph --timeout=60 -v --durations=10'
+    cmd = 'pytest --cov=qmxgraph --timeout=60 -v --durations=10 -x'
 
     import subprocess