diff --git a/requirements.txt b/requirements.txt
index b58735c..f382b67 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ efficientnet>=1.0.0
 facenet-pytorch>=2.5.0
 requests>=2.31.0
 tqdm>=4.65.0
+protobuf>=4.25.8 # not directly required, pinned by Snyk to avoid a vulnerability