diff --git a/requirements.txt b/requirements.txt
index 208c725..6659a17 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,5 @@ grpcio
 numpy
 tensorflow
 vald-client-python
+protobuf>=4.25.8 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability