diff --git a/images/mkdocs/requirements.txt b/images/mkdocs/requirements.txt
index 7155deb7f6d5a..34c06f367eb4e 100644
--- a/images/mkdocs/requirements.txt
+++ b/images/mkdocs/requirements.txt
@@ -1,2 +1,3 @@
 mkdocs-material==8.4.3
 mkdocs-macros-plugin==0.7.0
+pymdown-extensions>=10.16.1 # not directly required, pinned by Snyk to avoid a vulnerability