1 files changed, 1 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index acc1cf5..a512e5e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ envlist=py3,check-manifest,mypy,flake8,black,black-run
 [testenv]
 deps =
   pytz
-  pytest
+  pytest == 5.4.1
 commands=
   {envpython} -m pytest test {posargs}