diff --git a/django-stubs/contrib/sessions/middleware.pyi b/django-stubs/contrib/sessions/middleware.pyi
index 24237d4..0965f91 100644
--- a/django-stubs/contrib/sessions/middleware.pyi
+++ b/django-stubs/contrib/sessions/middleware.pyi
@@ -1,4 +1,4 @@
-from typing import Any, Callable, Optional
+from typing import Callable, Optional, Type
 
 from django.core.handlers.wsgi import WSGIRequest
 from django.http.request import HttpRequest
@@ -7,10 +7,13 @@ from django.utils.deprecation import MiddlewareMixin
 
 
 class SessionMiddleware(MiddlewareMixin):
-    get_response: Callable = ...
-    SessionStore: Type[django.contrib.sessions.backends.db.SessionStore] = ...
+    get_response: Callable[[WSGIRequest], HttpResponseBase] = ...
+    SessionStore: Type[SessionStore] = ...
+
     def __init__(self, get_response: Optional[Callable] = ...) -> None: ...
+
     def process_request(self, request: HttpRequest) -> None: ...
+
     def process_response(
-        self, request: WSGIRequest, response: HttpResponseBase
+            self, request: WSGIRequest, response: HttpResponseBase
     ) -> HttpResponseBase: ...
diff --git a/django-stubs/db/models/fields/related.pyi b/django-stubs/db/models/fields/related.pyi
index a0f0929..4d823f3 100644
--- a/django-stubs/db/models/fields/related.pyi
+++ b/django-stubs/db/models/fields/related.pyi
@@ -19,11 +19,11 @@ from django.forms.models import ModelChoiceField, ModelMultipleChoiceField
 
 from . import Field
 from .mixins import FieldCacheMixin
-from .related_descriptors import (ForwardManyToOneDescriptor,
-                                  ForwardOneToOneDescriptor,
-                                  ManyToManyDescriptor,
-                                  ReverseManyToOneDescriptor,
-                                  ReverseOneToOneDescriptor)
+from .related_descriptors import (ForwardManyToOneDescriptor as ForwardManyToOneDescriptor,
+                                  ForwardOneToOneDescriptor as ForwardOneToOneDescriptor,
+                                  ManyToManyDescriptor as ManyToManyDescriptor,
+                                  ReverseManyToOneDescriptor as ReverseManyToOneDescriptor,
+                                  ReverseOneToOneDescriptor as ReverseOneToOneDescriptor)
 from .related_lookups import (RelatedExact, RelatedGreaterThan,
                               RelatedGreaterThanOrEqual, RelatedIn,
                               RelatedIsNull, RelatedLessThan,
@@ -236,7 +236,7 @@ class ForeignKey(ForeignObject):
     def get_col(
         self,
         alias: str,
-        output_field: Optional[Union[Field, reverse_related.OneToOneRel]] = ...,
+        output_field: Optional[Union[Field, OneToOneRel]] = ...,
     ) -> Col: ...
 
 class OneToOneField(ForeignKey):