diff --git a/src/typing_extensions.py b/src/typing_extensions.py
index ced78373..e04bd71c 100644
--- a/src/typing_extensions.py
+++ b/src/typing_extensions.py
@@ -188,7 +188,7 @@ class sentinel:
 
         def __init__(
             self,
-            __name: str = _sentinel_placeholder,
+            __name: LiteralString = _sentinel_placeholder,
             __repr: typing.Optional[str] = _sentinel_placeholder,
             /,
             *,