diff --git a/pyproject.toml b/pyproject.toml
index a7ce458c9ae..6371c85c2f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "click>=7.0.0,<9.0.0",
     "colorama>=0.3.9,<1",
     "dill~=0.3.0",
-    "protobuf>=4.24.0",
+    "protobuf>=6.30.2,<7",
     "Jinja2>=2,<4",
     "jsonschema",
     "mmh3",