diff --git a/doc-site/requirements.txt b/doc-site/requirements.txt
index 20da6741a..3a63f0196 100644
--- a/doc-site/requirements.txt
+++ b/doc-site/requirements.txt
@@ -2,3 +2,4 @@ mkdocs-material
 mkdocs-literate-nav
 mkdocs-include-markdown-plugin
 mike
+markdown>=3.8.1 # not directly required, pinned by Snyk to avoid a vulnerability