diff --git a/tasks.py b/tasks.py
index 4ca01bab..6983dbea 100644
--- a/tasks.py
+++ b/tasks.py
@@ -36,7 +36,7 @@ def release(c, skip_tests=False):
     Release a new version of 'Tailbone'.
     """
     if not skip_tests:
-        c.run('tox')
+        c.run('pytest')
 
     if os.path.exists('dist'):
         shutil.rmtree('dist')