diff --git a/stdlib/2and3/uu.pyi b/stdlib/2and3/uu.pyi
new file mode 100644
index 000000000..ee01c3596
--- /dev/null
+++ b/stdlib/2and3/uu.pyi
@@ -0,0 +1,10 @@
+# Stubs for uu (Python 2 and 3)
+
+from typing import BinaryIO, Union, Optional, Text
+
+_File = Union[Text, BinaryIO]
+
+class Error(Exception): ...
+
+def encode(in_file: _File, out_file: _File, name: Optional[str] = ..., mode: Optional[int] = ...) -> None: ...
+def decode(in_file: _File, out_file: Optional[_File] = ..., mode: Optional[int] = ..., quiet: int = ...) -> None: ...