diff --git a/requirements-docs.txt b/requirements-docs.txt
index cfda6a0..ef5b98f 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -3,3 +3,4 @@ recommonmark
 sphinx_rtd_theme
 sphinxcontrib-images
 pygments>=2.7.4 # not directly required, pinned by Snyk to avoid a vulnerability
+setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability