diff --git a/dev-requirements.txt b/dev-requirements.txt
index 67acd33..048550c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,3 +1,4 @@
 mock==2.0.0
 requests_mock==1.5.2
 pylint==1.9.3
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability