diff --git a/pyproject.toml b/pyproject.toml
index d8afd1e..ea6b016 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,14 @@ mkautodoc = "^0.1.0"
 [tool.black]
 line-length = 88
 
+[tool.isort]
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+ensure_newline_before_comments = true
+line_length = 88
+
 [build-system]
 requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"
diff --git a/slowapi/extension.py b/slowapi/extension.py
index c9b8e56..ebfad07 100644
--- a/slowapi/extension.py
+++ b/slowapi/extension.py
@@ -13,8 +13,19 @@ import time
 import warnings
 from email.utils import formatdate, parsedate_to_datetime
 from functools import wraps
-from typing import (Any, Awaitable, Callable, Dict, List, Optional, Set, Tuple,
-                    Type, TypeVar, Union)
+from typing import (
+    Any,
+    Awaitable,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Set,
+    Tuple,
+    Type,
+    TypeVar,
+    Union,
+)
 
 from limits import RateLimitItem  # type: ignore
 from limits.errors import ConfigurationError  # type: ignore