Replace `dict` by `Mapping` on `HTTPException.headers` (#2749)

diff --git a/starlette/exceptions.py b/starlette/exceptions.py
index bd3352eb0f78717fdff0d4e02903e3a5b056a766..c48f0838a927ec68251f3e318f10969d85c22fe8 100644 (file)
--- a/starlette/exceptions.py
+++ b/starlette/exceptions.py
@@ -12,7 +12,7 @@ class HTTPException(Exception):
         self,
         status_code: int,
         detail: str | None = None,
-        headers: dict[str, str] | None = None,
+        headers: typing.Mapping[str, str] | None = None,
     ) -> None:
         if detail is None:
             detail = http.HTTPStatus(status_code).phrase