diff --git a/django-stubs/conf/urls/__init__.pyi b/django-stubs/conf/urls/__init__.pyi
index e2850fb..6bb0dfa 100644
--- a/django-stubs/conf/urls/__init__.pyi
+++ b/django-stubs/conf/urls/__init__.pyi
@@ -5,10 +5,10 @@ from django.http.response import HttpResponse, HttpResponseBase
 
 from django.urls import URLResolver, URLPattern
 
-handler400 = ...  # type: str
-handler403 = ...  # type: str
-handler404 = ...  # type: str
-handler500 = ...  # type: str
+handler400: Callable[..., HttpResponse] = ...
+handler403: Callable[..., HttpResponse] = ...
+handler404: Callable[..., HttpResponse] = ...
+handler500: Callable[..., HttpResponse] = ...
 
 IncludedURLConf = Tuple[List[URLResolver], Optional[str], Optional[str]]
 
diff --git a/django-stubs/db/migrations/loader.pyi b/django-stubs/db/migrations/loader.pyi
index 3cf234e..2c52e64 100644
--- a/django-stubs/db/migrations/loader.pyi
+++ b/django-stubs/db/migrations/loader.pyi
@@ -1,4 +1,4 @@
-from typing import Any, Dict, Optional, Set, Tuple, Union
+from typing import Any, Dict, Optional, Set, Tuple, Union, Sequence
 
 from django.db import DefaultConnectionProxy
 from django.db.backends.base.base import BaseDatabaseWrapper
@@ -34,4 +34,6 @@ class MigrationLoader:
     def build_graph(self) -> None: ...
     def check_consistent_history(self, connection: Any) -> None: ...
     def detect_conflicts(self) -> Dict[str, Set[str]]: ...
-    def project_state(self, nodes: Optional[Tuple[str, str]] = ..., at_end: bool = ...) -> ProjectState: ...
+    def project_state(
+        self, nodes: Optional[Tuple[str, str], Sequence[Tuple[str, str]]] = ..., at_end: bool = ...
+    ) -> ProjectState: ...
diff --git a/django-stubs/db/models/query.pyi b/django-stubs/db/models/query.pyi
index 836b2a5..92f7a8e 100644
--- a/django-stubs/db/models/query.pyi
+++ b/django-stubs/db/models/query.pyi
@@ -16,7 +16,7 @@ from typing import (
 )
 
 from django.db.models.base import Model
-from django.db.models.expressions import Combinable
+from django.db.models.expressions import Combinable as Combinable, F as F
 from django.db.models.sql.query import Query, RawQuery
 
 from django.db import models
diff --git a/django-stubs/middleware/csrf.pyi b/django-stubs/middleware/csrf.pyi
index eb13f65..abfde51 100644
--- a/django-stubs/middleware/csrf.pyi
+++ b/django-stubs/middleware/csrf.pyi
@@ -27,3 +27,7 @@ class CsrfViewMiddleware(MiddlewareMixin):
     def process_response(self, request: HttpRequest, response: HttpResponseBase) -> HttpResponseBase: ...
 
 def _compare_salted_tokens(request_csrf_token: str, csrf_token: str) -> bool: ...
+def _get_new_csrf_string() -> str: ...
+def _salt_cipher_secret(secret: str) -> str: ...
+def _unsalt_cipher_token(token: str) -> str: ...
+def _get_new_csrf_token() -> str: ...
diff --git a/django-stubs/template/loader.pyi b/django-stubs/template/loader.pyi
index 527a596..693d881 100644
--- a/django-stubs/template/loader.pyi
+++ b/django-stubs/template/loader.pyi
@@ -1,6 +1,7 @@
 from typing import Any, Dict, List, Optional, Union
 
 from django.http.request import HttpRequest
+from django.template.exceptions import TemplateDoesNotExist as TemplateDoesNotExist
 
 def get_template(template_name: str, using: Optional[str] = ...) -> Any: ...
 def select_template(template_name_list: Union[List[str], str], using: Optional[str] = ...) -> Any: ...
diff --git a/django-stubs/test/client.pyi b/django-stubs/test/client.pyi
index 2a04e78..481d944 100644
--- a/django-stubs/test/client.pyi
+++ b/django-stubs/test/client.pyi
@@ -11,7 +11,10 @@ from django.http.response import HttpResponse, HttpResponseBase
 
 from django.core.handlers.wsgi import WSGIRequest
 
-CONTENT_TYPE_RE: Pattern
+BOUNDARY: str = ...
+MULTIPART_CONTENT: str = ...
+CONTENT_TYPE_RE: Pattern = ...
+JSON_CONTENT_TYPE_RE: Pattern = ...
 
 class RedirectCycleError(Exception):
     last_response: HttpResponseBase = ...
diff --git a/django-stubs/urls/resolvers.pyi b/django-stubs/urls/resolvers.pyi
index 6a8798b..68a8a44 100644
--- a/django-stubs/urls/resolvers.pyi
+++ b/django-stubs/urls/resolvers.pyi
@@ -23,6 +23,8 @@ class ResolverMatch:
         namespaces: Optional[List[Optional[str]]] = ...,
     ) -> None: ...
     def __getitem__(self, index: int) -> Any: ...
+    # for tuple unpacking
+    def __iter__(self) -> Any: ...
 
 def get_resolver(urlconf: Optional[str] = ...) -> URLResolver: ...
 def get_ns_resolver(ns_pattern: str, resolver: URLResolver, converters: Tuple) -> URLResolver: ...