diff --git a/setup.cfg b/setup.cfg
index c44a05d4..1a9e0c77 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -61,6 +61,7 @@ dev =
 [mypy]
 files = py/farm_ng, py/tests
 ignore_missing_imports = True
+# types-protobuf fix: https://github.com/python/typeshed/issues/7519
 namespace_packages = True
 
 [options.package_data]