diff --git a/stdlib/2/shlex.pyi b/stdlib/2/shlex.pyi
index 3e53f1d10..5bf6fccdb 100644
--- a/stdlib/2/shlex.pyi
+++ b/stdlib/2/shlex.pyi
@@ -1,9 +1,12 @@
-from typing import Optional, List, Any, IO
+from typing import Any, IO, List, Optional, TypeVar
 
 def split(s: Optional[str], comments: bool = ..., posix: bool = ...) -> List[str]: ...
 
+_SLT = TypeVar('_SLT', bound=shlex)
+
 class shlex:
     def __init__(self, instream: IO[Any] = ..., infile: IO[Any] = ..., posix: bool = ...) -> None: ...
+    def __iter__(self: _SLT) -> _SLT: ...
     def get_token(self) -> Optional[str]: ...
     def push_token(self, _str: str) -> None: ...
     def read_token(self) -> str: ...