diff --git a/requirements.txt b/requirements.txt
index 7e00b0c..2b10f2e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
 requests==2.20
 mock==2.0.0
+urllib3>=1.26.17 # not directly required, pinned by Snyk to avoid a vulnerability