diff --git a/pyproject.toml b/pyproject.toml
index 2df87137a..72922c42e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ dependencies = [
   "grpcio~=1.60.0",
   "grpcio-tools~=1.60.0",
   "numpy>=1.21.6",
-  "protobuf~=4.25.2",
+  "protobuf>=4.25.2,<5.29.0",
   "pymongo",
   "Flask==3.0.3",
   "pyjwt",