diff --git a/requirements.txt b/requirements.txt
index 90736be8..039e45a6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,3 +39,4 @@ tweak >= 1.0.3, < 2
 # Version range restricted due to an incompatibility with later versions of gitdb2.
 # See https://github.com/gitpython-developers/GitPython/issues/983
 gitdb2==3.0.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability