diff --git a/third_party/2and3/paramiko/client.pyi b/third_party/2and3/paramiko/client.pyi
index 486e5a4c3..55839de1e 100644
--- a/third_party/2and3/paramiko/client.pyi
+++ b/third_party/2and3/paramiko/client.pyi
@@ -58,7 +58,7 @@ class SSHClient(ClosingContextManager):
         height_pixels: int = ...,
         environment: Optional[Mapping[str, str]] = ...,
     ) -> Channel: ...
-    def open_sftp(self) -> Optional[SFTPClient]: ...
+    def open_sftp(self) -> SFTPClient: ...
     def get_transport(self) -> Optional[Transport]: ...
 
 class MissingHostKeyPolicy: