diff --git a/requirements_dev.txt b/requirements_dev.txt
index 477ef9a..788a16e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,3 +9,4 @@ ssort
 tox
 twine
 watchdog
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability