diff --git a/requirements.txt b/requirements.txt
index 21de4a74f0..e6049eee94 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,3 +14,4 @@ requests
 SQLAlchemy>=1.1
 tornado>=5.1
 traitlets>=4.3.2
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability