diff --git a/CHANGES.md b/CHANGES.md
index bc9f57e..e8ec0e2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,7 +2,7 @@ CHANGES
 =======
 
 Unreleased
-===========
+==========
 - Add type hints. ([#228](https://github.com/mozilla/django-csp/pull/228))
 
 4.0b1
diff --git a/csp/checks.py b/csp/checks.py
index 9c15b0a..c7ca61a 100644
--- a/csp/checks.py
+++ b/csp/checks.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
+
 import pprint
-from typing import Dict, Tuple, Any, Optional, Sequence, TYPE_CHECKING, List
+from collections.abc import Sequence
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple
 
 from django.conf import settings
 from django.core.checks import Error
diff --git a/csp/context_processors.py b/csp/context_processors.py
index 4c34e0a..13f3808 100644
--- a/csp/context_processors.py
+++ b/csp/context_processors.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
-from typing import Dict, Literal, TYPE_CHECKING
+
+from typing import TYPE_CHECKING, Dict, Literal
 
 if TYPE_CHECKING:
     from django.http import HttpRequest
diff --git a/csp/contrib/rate_limiting.py b/csp/contrib/rate_limiting.py
index 3645a47..9633a87 100644
--- a/csp/contrib/rate_limiting.py
+++ b/csp/contrib/rate_limiting.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
-from typing import TYPE_CHECKING
+
 import random
+from typing import TYPE_CHECKING
 
 from django.conf import settings
 
diff --git a/csp/extensions/__init__.py b/csp/extensions/__init__.py
index 45c4de4..8ddc782 100644
--- a/csp/extensions/__init__.py
+++ b/csp/extensions/__init__.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
-from typing import Callable, TYPE_CHECKING, Any
+
+from typing import TYPE_CHECKING, Any, Callable
 
 from jinja2 import nodes
 from jinja2.ext import Extension
diff --git a/csp/middleware.py b/csp/middleware.py
index 03cc745..ff58c61 100644
--- a/csp/middleware.py
+++ b/csp/middleware.py
@@ -1,4 +1,5 @@
 from __future__ import annotations
+
 import base64
 import http.client as http_client
 import os
diff --git a/csp/templatetags/csp.py b/csp/templatetags/csp.py
index a28bfc1..8cdf83f 100644
--- a/csp/templatetags/csp.py
+++ b/csp/templatetags/csp.py
@@ -1,12 +1,14 @@
 from __future__ import annotations
+
 from typing import TYPE_CHECKING, Optional
+
 from django import template
 from django.template.base import token_kwargs
 
 from csp.utils import build_script_tag
 
 if TYPE_CHECKING:
-    from django.template.base import NodeList, FilterExpression, Token, Parser
+    from django.template.base import FilterExpression, NodeList, Parser, Token
     from django.template.context import Context
 
 register = template.Library()
@@ -18,7 +20,7 @@ def _unquote(s: str) -> str:
 
 
 @register.tag(name="script")
-def script(parser: Parser, token: Token) -> "NonceScriptNode":
+def script(parser: Parser, token: Token) -> NonceScriptNode:
     # Parse out any keyword args
     token_args = token.split_contents()
     kwargs = token_kwargs(token_args[1:], parser)
diff --git a/csp/tests/environment.py b/csp/tests/environment.py
index a5d188d..e53a562 100644
--- a/csp/tests/environment.py
+++ b/csp/tests/environment.py
@@ -1,6 +1,7 @@
-from jinja2 import Environment
 from typing import Any
 
+from jinja2 import Environment
+
 
 def environment(**options: Any) -> Environment:
     env = Environment(**options)
diff --git a/csp/tests/settings.py b/csp/tests/settings.py
index ffad00d..8a0ea7e 100644
--- a/csp/tests/settings.py
+++ b/csp/tests/settings.py
@@ -1,6 +1,5 @@
 from csp.constants import NONCE, SELF
 
-
 CONTENT_SECURITY_POLICY = {
     "DIRECTIVES": {
         "default-src": [SELF, NONCE],
diff --git a/csp/tests/test_decorators.py b/csp/tests/test_decorators.py
index 1a11dfd..7e29b69 100644
--- a/csp/tests/test_decorators.py
+++ b/csp/tests/test_decorators.py
@@ -1,11 +1,13 @@
 from __future__ import annotations
+
 from typing import TYPE_CHECKING
 
-import pytest
 from django.http import HttpResponse
 from django.test import RequestFactory
 from django.test.utils import override_settings
 
+import pytest
+
 from csp.constants import HEADER, HEADER_REPORT_ONLY, NONCE
 from csp.decorators import csp, csp_exempt, csp_replace, csp_update
 from csp.middleware import CSPMiddleware
diff --git a/csp/tests/test_utils.py b/csp/tests/test_utils.py
index d76f49a..74d5c4f 100644
--- a/csp/tests/test_utils.py
+++ b/csp/tests/test_utils.py
@@ -2,7 +2,7 @@
 from django.utils.functional import lazy
 
 from csp.constants import NONCE, NONE, SELF
-from csp.utils import build_policy, default_config, DEFAULT_DIRECTIVES
+from csp.utils import DEFAULT_DIRECTIVES, build_policy, default_config
 
 
 def policy_eq(a: str, b: str) -> None:
diff --git a/csp/tests/utils.py b/csp/tests/utils.py
index 36512ca..bcd6120 100644
--- a/csp/tests/utils.py
+++ b/csp/tests/utils.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
+
 from abc import ABC, abstractmethod
-from typing import Dict, Optional, TYPE_CHECKING, Callable, Any, Tuple
+from typing import TYPE_CHECKING, Any, Callable, Dict, Optional, Tuple
 
 from django.http import HttpResponse
 from django.template import Context, Template, engines
diff --git a/csp/utils.py b/csp/utils.py
index fe35633..723b967 100644
--- a/csp/utils.py
+++ b/csp/utils.py
@@ -2,7 +2,7 @@
 import re
 from collections import OrderedDict
 from itertools import chain
-from typing import Any, Dict, Optional, Union, Callable
+from typing import Any, Callable, Dict, Optional, Union
 
 from django.conf import settings
 from django.utils.encoding import force_str
diff --git a/docs/configuration.rst b/docs/configuration.rst
index 2980339..c226591 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -77,7 +77,7 @@ a more slightly strict policy and is used to test the policy without breaking th
     signifies that you do not want any sources for this directive. The ``None`` value is a
     Python keyword that represents the absence of a value and when used as the value of a directive,
     it will remove the directive from the policy.
-    
+
     This is useful when using the ``@csp_replace`` decorator to effectively clear a directive from
     the base configuration as defined in the settings. For example, if the Django settings the
     ``frame-ancestors`` directive is set to a list of sources and you want to remove the
@@ -124,9 +124,9 @@ policy.
 
        The CSP keyword values of ``'self'``, ``'unsafe-inline'``, ``'strict-dynamic'``, etc. must be
        quoted!  e.g.: ``"default-src": ["'self'"]``.  Without quotes they will not work as intended.
-       
+
        New in version 4.0 are CSP keyword constants. Use these to minimize quoting mistakes and typos.
-       
+
        The following CSP keywords are available:
 
            * ``NONE`` = ``"'none'"``
@@ -140,9 +140,9 @@ policy.
            * ``WASM_UNSAFE_EVAL`` = ``"'wasm-unsafe-eval'"``
 
        Example usage:
-       
+
        .. code-block:: python
-       
+
             from csp.constants import SELF, STRICT_DYNAMIC
 
             CONTENT_SECURITY_POLICY = {
@@ -318,4 +318,4 @@ the :ref:`decorator documentation <decorator-chapter>` for more details.
 .. _block-all-mixed-content_mdn: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/block-all-mixed-content
 .. _plugin_types_mdn: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/plugin-types
 .. _prefetch_src_mdn: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/prefetch-src
-.. _strict-csp: https://csp.withgoogle.com/docs/strict-csp.html
\ No newline at end of file
+.. _strict-csp: https://csp.withgoogle.com/docs/strict-csp.html
diff --git a/docs/migration-guide.rst b/docs/migration-guide.rst
index 5320c8f..4c78327 100644
--- a/docs/migration-guide.rst
+++ b/docs/migration-guide.rst
@@ -106,11 +106,11 @@ The new settings would be:
 .. note::
 
     If you were using the ``CSP_INCLUDE_NONCE_IN`` setting, this has been removed in the new settings
-    format. 
-    
+    format.
+
     **Previously:** You could use the ``CSP_INCLUDE_NONCE_IN`` setting to specify which directives in
     your Content Security Policy (CSP) should include a nonce.
-    
+
     **Now:** You can include a nonce in any directive by adding the ``NONCE`` constant from the
     ``csp.constants`` module to the list of sources for that directive.