diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6748578be6..63488b87cf 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -19,3 +19,4 @@ sphinx-copybutton
 sphinx-jsonschema
 sphinxext-opengraph
 sphinxext-rediraffe
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability