diff --git a/python/realtime-transcriptions/requirements.txt b/python/realtime-transcriptions/requirements.txt
index 5da9bbb..f4857e9 100644
--- a/python/realtime-transcriptions/requirements.txt
+++ b/python/realtime-transcriptions/requirements.txt
@@ -1,3 +1,4 @@
 Flask==1.0.2
 Flask-Sockets==0.2.1
 google-cloud-speech==2.0.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability