diff --git a/requirements.txt b/requirements.txt
index 4594725..76355e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ flask
 flask-sqlalchemy
 sqlalchemy
 pytest
-pytest-cov
\ No newline at end of file
+pytest-cov
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file