diff --git a/requirements.txt b/requirements.txt
index 467b50a..a17adaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ networkx[default] >= 2.6
 pygments >= 2.7.4
 scipy >= 1.7
 spacy >= 3.0
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability