diff --git a/stubs/protobuf/google/protobuf/descriptor.pyi b/stubs/protobuf/google/protobuf/descriptor.pyi
index 2b4f36e35..d8a1ad676 100644
--- a/stubs/protobuf/google/protobuf/descriptor.pyi
+++ b/stubs/protobuf/google/protobuf/descriptor.pyi
@@ -20,6 +20,7 @@ class DescriptorMetaclass(type):
     def __instancecheck__(self, obj: Any) -> bool: ...
 
 _internal_create_key: object
+_USE_C_DESCRIPTORS: bool
 
 class DescriptorBase(metaclass=DescriptorMetaclass):
     has_options: Any
diff --git a/stubs/protobuf/google/protobuf/internal/builder.pyi b/stubs/protobuf/google/protobuf/internal/builder.pyi
new file mode 100644
index 000000000..a0a72dec5
--- /dev/null
+++ b/stubs/protobuf/google/protobuf/internal/builder.pyi
@@ -0,0 +1,5 @@
+from _typeshed import Incomplete
+from typing import Any
+
+def BuildMessageAndEnumDescriptors(file_des: Incomplete, module: dict[str, Any]) -> None: ...
+def BuildTopDescriptorsAndMessages(file_des: Incomplete, module_name: str, module: dict[str, Any]) -> None: ...