diff --git a/src/pagerduty/requirements.txt b/src/pagerduty/requirements.txt
index c1e31ba..6345efb 100644
--- a/src/pagerduty/requirements.txt
+++ b/src/pagerduty/requirements.txt
@@ -1,2 +1,3 @@
 pypd
 requests
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability