diff --git a/docs/requirements.txt b/docs/requirements.txt
index 7c646c0ed..c65888ef6 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,3 +2,4 @@ mkdocs==1.3.0
 mkdocs-material==8.2.14
 mkdocs-diagrams==1.0.0
 mkdocs-redirects==1.0.3
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability