diff --git a/requirements-docs.txt b/requirements-docs.txt
index 90edd8e31..a213a19f3 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -3,3 +3,4 @@ Jinja2==2.11.3
 MarkupSafe==0.23
 alabaster<0.7.14
 -e .
+setuptools>=78.1.1 # not directly required, pinned by Snyk to avoid a vulnerability