diff --git a/requirements-test.txt b/requirements-test.txt
index 6b95b5c..3912a69 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -5,3 +5,4 @@ paramiko>=1.12.2
 pycrypto>=2.6.1
 tox>=1.6.1
 mock
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability