diff --git a/requirements.txt b/requirements.txt
index 2722c2d45..71a92a049 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,3 +26,4 @@ sqlalchemy==1.3.19
 pylint==2.7.4
 pytype==2021.4.15
 yapf==0.30.0
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability