diff --git a/stdlib/3/asyncio/transports.pyi b/stdlib/3/asyncio/transports.pyi
index d194f833e..a0b0fdd8b 100644
--- a/stdlib/3/asyncio/transports.pyi
+++ b/stdlib/3/asyncio/transports.pyi
@@ -37,8 +37,8 @@ class DatagramTransport(BaseTransport):
 
 class SubprocessTransport(BaseTransport):
     def get_pid(self) -> int: ...
-    def get_returncode(self) -> int: ...
-    def get_pipe_transport(self, fd: int) -> BaseTransport: ...
+    def get_returncode(self) -> Optional[int]: ...
+    def get_pipe_transport(self, fd: int) -> Optional[BaseTransport]: ...
     def send_signal(self, signal: int) -> int: ...
     def terminate(self) -> None: ...
     def kill(self) -> None: ...