diff --git a/builtins/2.7/_warnings.pyi b/builtins/2.7/_warnings.pyi
new file mode 100644
index 000000000..99b864407
--- /dev/null
+++ b/builtins/2.7/_warnings.pyi
@@ -0,0 +1,11 @@
+from typing import Any
+
+default_action = ...  # type: str
+filters = ...  # type: List[tuple]
+once_registry = ...  # type: dict
+
+def warn(message: Warning, category:type = ..., stacklevel:int = ...) -> None: ...
+def warn_explicit(message: Warning, category:type,
+                  filename: str, lineno: int,
+                  module:Any = ..., registry:dict = ...,
+                  module_globals:dict = ...) -> None: ...