diff --git a/requirements.txt b/requirements.txt
index 208c725..0a02339 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ grpcio
 numpy
 tensorflow
 vald-client-python
+keras>=3.9.0 # not directly required, pinned by Snyk to avoid a vulnerability