diff --git a/dev_requirements.txt b/dev_requirements.txt
index f934001..d44ccd0 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -4,3 +4,5 @@ mock
 ruff
 Sphinx
 pynose
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability