diff --git a/fastbencode/__init__.py b/fastbencode/__init__.py
index 84d5d78..d05c953 100644
--- a/fastbencode/__init__.py
+++ b/fastbencode/__init__.py
@@ -16,12 +16,10 @@
 
 """Wrapper around the bencode Rust and Python implementations."""
 
-from typing import Type
-
 __version__ = (0, 3, 10)
 
 
-Bencached: Type
+Bencached: type
 
 try:
     from fastbencode._bencode_rs import (
diff --git a/fastbencode/_bencode_py.py b/fastbencode/_bencode_py.py
index bcb44fe..ba5fe4c 100644
--- a/fastbencode/_bencode_py.py
+++ b/fastbencode/_bencode_py.py
@@ -17,7 +17,7 @@
 # Modifications copyright (C) 2021-2023 Jelmer Vernooij
 
 
-from typing import Callable, Dict, List, Type
+from collections.abc import Callable
 
 
 class BDecoder:
@@ -118,7 +118,7 @@ def __init__(self, s) -> None:
 class BEncoder:
     def __init__(self, bytestring_encoding=None):
         self.bytestring_encoding = bytestring_encoding
-        self.encode_func: Dict[Type, Callable[[object, List[bytes]], None]] = {
+        self.encode_func: dict[type, Callable[[object, list[bytes]], None]] = {
             Bencached: self.encode_bencached,
             int: self.encode_int,
             bytes: self.encode_bytes,
diff --git a/pyproject.toml b/pyproject.toml
index 2bff901..20e5c3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,6 @@ include-package-data = false
 version = {attr = "fastbencode.__version__"}
 
 [tool.ruff]
-target-version = "py37"
 line-length = 79
 
 [tool.ruff.lint]