diff --git a/requirements.txt b/requirements.txt
index aee4e1f..1bc7abd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ pytest-cov==2.8.1
 python-interface==1.5.3
 statistics==1.0.3.5
 parameterized==0.7.1
-flask
\ No newline at end of file
+flask
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file