diff --git a/pyproject.toml b/pyproject.toml
index cd9741d..597acec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ dependencies = [
     "importlib_metadata; python_version < '3.8'",
     "numpy",
     "typing-protocol; python_version < '3.8'",
-    "protobuf==3.19.4",
+    "protobuf==5.29.6",
     "pycryptodomex",
     "pytz",
     "PyYAML",