diff --git a/docs/requirements.txt b/docs/requirements.txt
index 7e44467..2e3e462 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,3 +2,4 @@ sphinx
 sphinx-js
 django
 -r ../src/facond_examples/requirements.txt
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability