diff --git a/requirements.txt b/requirements.txt
index bb8f7823b..96785f205 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,5 @@ git+https://github.com/cocodataset/panopticapi.git#egg=panopticapi
 scipy
 onnx
 onnxruntime
+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