diff --git a/constraints_plone52.txt b/constraints_plone52.txt
index 012f02c..c98ca46 100644
--- a/constraints_plone52.txt
+++ b/constraints_plone52.txt
@@ -4,4 +4,4 @@ isort>=5
 black==22.8.0
 tox==4.3.5
 flake8==5.0.4
-setuptools=
+setuptools==