diff --git a/docs/requirements.txt b/docs/requirements.txt
index b701f490..d56bea71 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,3 +5,4 @@ pybind11==2.4.3
 setuptools>=65.5.1 
 sphinx==4.2.0
 sphinx-gallery==0.8.1
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability