diff --git a/requirements.txt b/requirements.txt
index 9f507fe..094791e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ requests>=2.3.0
 colorama>=0.3.3
 docopt>=0.6.1
 cssselect>=0.9.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability