diff --git a/server/djangoapp/microservices/requirements.txt b/server/djangoapp/microservices/requirements.txt
index 0d6d9bcfc6..e5ea8a508a 100644
--- a/server/djangoapp/microservices/requirements.txt
+++ b/server/djangoapp/microservices/requirements.txt
@@ -1,2 +1,3 @@
 Flask
 nltk
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability