diff --git a/tests/requirements.txt b/tests/requirements.txt
index 92ae307b9..25ceb1e31 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -5,7 +5,7 @@ Django==2.2.24
 django-ajax-selects==1.9.1
 django-ical==1.8.0
 django-paypal==1.0.0
-django-mptt==0.13.3
+django-mptt==0.13.4
 django-post-office==3.5.3
 django-timezone-field==4.2.1
 djangorestframework==3.12.4