diff --git a/django-stubs/contrib/sessions/backends/base.pyi b/django-stubs/contrib/sessions/backends/base.pyi
index 5fcb05e..e3ead61 100644
--- a/django-stubs/contrib/sessions/backends/base.pyi
+++ b/django-stubs/contrib/sessions/backends/base.pyi
@@ -24,7 +24,10 @@ class SessionBase(Dict[str, Any]):
     def items(self): ...
     def clear(self) -> None: ...
     def is_empty(self) -> bool: ...
-    session_key: Any = ...
+    def _get_session_key(self) -> str: ...
+    def _set_session_key(self, value: str) -> None: ...
+    session_key = property(_get_session_key)
+    _session_key = property(_get_session_key, _set_session_key)
     def get_expiry_age(self, **kwargs: Any) -> int: ...
     def get_expiry_date(self, **kwargs: Any) -> datetime: ...
     def set_expiry(self, value: Optional[Union[datetime, int]]) -> None: ...
diff --git a/django-stubs/http/request.pyi b/django-stubs/http/request.pyi
index 821e690..e4abb8a 100644
--- a/django-stubs/http/request.pyi
+++ b/django-stubs/http/request.pyi
@@ -71,6 +71,8 @@ class HttpRequest(BytesIO):
     def scheme(self) -> Optional[str]: ...
     def is_secure(self) -> bool: ...
     def is_ajax(self) -> bool: ...
+    def accepted_types(self) -> str: ...
+    def __repr__(self) -> str: ...
     def parse_file_upload(
         self, META: Mapping[str, Any], post_data: BinaryIO
     ) -> Tuple[QueryDict, MultiValueDict[str, uploadedfile.UploadedFile]]: ...
diff --git a/django-stubs/http/response.pyi b/django-stubs/http/response.pyi
index 67ca939..2bc42d2 100644
--- a/django-stubs/http/response.pyi
+++ b/django-stubs/http/response.pyi
@@ -37,6 +37,7 @@ class HttpResponseBase(Iterable[Any]):
         headers: Optional[Dict[str, str]] = ...,
     ) -> None: ...
     def serialize_headers(self) -> bytes: ...
+    __bytes__ = serialize_headers
     def __setitem__(self, header: Union[str, bytes], value: Union[str, bytes, int]) -> None: ...
     def __delitem__(self, header: Union[str, bytes]) -> None: ...
     def __getitem__(self, header: Union[str, bytes]) -> str: ...
@@ -83,6 +84,7 @@ class HttpResponse(HttpResponseBase):
     streaming: bool = ...
     def __init__(self, content: object = ..., *args: Any, **kwargs: Any) -> None: ...
     def serialize(self) -> bytes: ...
+    __bytes__ = serialize
     @property
     def url(self) -> str: ...
     # Attributes assigned by monkey-patching in test client ClientHandler.__call__()
@@ -94,6 +96,7 @@ class HttpResponse(HttpResponseBase):
     context: Context
     resolver_match: ResolverMatch
     def json(self) -> Any: ...
+    def __iter__(self): ...
     def getvalue(self) -> bytes: ...
 
 class StreamingHttpResponse(HttpResponseBase):