diff --git a/ptp/docker/requirements.txt b/ptp/docker/requirements.txt
index 10c48be..401b54d 100644
--- a/ptp/docker/requirements.txt
+++ b/ptp/docker/requirements.txt
@@ -1,2 +1,3 @@
 requests
 pathlib
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability