diff --git a/requirements.txt b/requirements.txt
index d130dcb..394dd96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 requests>=2.4.3
 schematics==1.1.1
 munch==2.5.0
+urllib3>=2.6.3 # not directly required, pinned by Snyk to avoid a vulnerability