diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8fff550..3b86004 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -39,3 +39,4 @@ six==1.14.0
     #   packaging
 wcwidth==0.1.8
     # via pytest
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability