diff --git a/requirements.txt b/requirements.txt
index 5188a43..2ac4fac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 Django>=1.8
 Sphinx==3.0.4
+setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability