diff --git a/stdlib/urllib/request.pyi b/stdlib/urllib/request.pyi
index f7e1f278d3e6..d6bb2f964782 100644
--- a/stdlib/urllib/request.pyi
+++ b/stdlib/urllib/request.pyi
@@ -92,7 +92,7 @@ else:
         context: None = None,
     ) -> _UrlopenRet: ...
 
-def install_opener(opener: OpenerDirector) -> None: ...
+def install_opener(opener: OpenerDirector | None) -> None: ...
 def build_opener(*handlers: BaseHandler | Callable[[], BaseHandler]) -> OpenerDirector: ...
 
 if sys.version_info >= (3, 14):