diff --git a/tox.ini b/tox.ini
index 0d73357..a8cbc4b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,7 +31,7 @@ deps =
   pytest-cov
   pytest-django
   mock
-  pytest
+  pytest<4.1
   lxml
   cssselect
   pylint