diff --git a/app/requirements.txt b/app/requirements.txt
index 710a5b0..6dc3bd0 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -1,3 +1,4 @@
 numpy
 pandas
 redisai
+numpy>=1.21.0rc1 # not directly required, pinned by Snyk to avoid a vulnerability