diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7d917e7..dd129ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,10 @@ set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-find_package(Python COMPONENTS Interpreter Development.Module REQUIRED)
+find_package(
+  Python
+  COMPONENTS Interpreter Development.Module
+  REQUIRED)
 
 # pybind11
 include_directories(${CMAKE_SOURCE_DIR}/src)
diff --git a/pylibbpf/ir_to_ctypes.py b/pylibbpf/ir_to_ctypes.py
index 059e664..99cd125 100644
--- a/pylibbpf/ir_to_ctypes.py
+++ b/pylibbpf/ir_to_ctypes.py
@@ -1,6 +1,5 @@
 import ctypes
 import logging
-from typing import Dict, Type
 
 from llvmlite import ir
 
@@ -51,7 +50,7 @@ def _make_repr(struct_name: str, fields: list):
     return __repr__
 
 
-def convert_structs_to_ctypes(structs_sym_tab) -> Dict[str, Type[ctypes.Structure]]:
+def convert_structs_to_ctypes(structs_sym_tab) -> dict[str, type[ctypes.Structure]]:
     """Convert PythonBPF's structs_sym_tab to ctypes.Structure classes."""
     if not structs_sym_tab:
         return {}
diff --git a/pylibbpf/wrappers.py b/pylibbpf/wrappers.py
index aa7679c..2b9a92a 100644
--- a/pylibbpf/wrappers.py
+++ b/pylibbpf/wrappers.py
@@ -1,4 +1,4 @@
-from typing import Callable, Optional
+from collections.abc import Callable
 
 
 class PerfEventArrayHelper:
@@ -13,7 +13,7 @@ class PerfEventArrayHelper:
         callback: Callable,
         struct_name: str = "",
         page_cnt: int = 8,
-        lost_callback: Optional[Callable] = None,
+        lost_callback: Callable | None = None,
     ):
         """Open perf buffer with auto-deserialization."""
         from .pylibbpf import PerfEventArray
diff --git a/setup.py b/setup.py
index 02e0658..e93fdd0 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@ import subprocess
 import sys
 from pathlib import Path
 
-from setuptools import Extension, find_packages, setup
+from setuptools import Extension, setup
 from setuptools.command.build_ext import build_ext