diff --git a/requirements.txt b/requirements.txt
index ec2bfad..45cbfe3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,4 +8,5 @@ psycopg2==2.8.4
 orcid==1.0.3
 Jinja2==3.0.3
 itsdangerous==2.0.1
-pandas
\ No newline at end of file
+pandas
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file