diff --git a/.cookiecutterrc b/.cookiecutterrc
index 29789c1..1d621f1 100644
--- a/.cookiecutterrc
+++ b/.cookiecutterrc
@@ -1,9 +1,6 @@
 # Generated by cookiepatcher, a small shim around cookiecutter (pip install cookiepatcher)
 
 default_context:
-    allow_tests_inside_package: 'no'
-    c_extension_function: '-'
-    c_extension_module: '-'
     c_extension_optional: 'yes'
     c_extension_support: 'yes'
     codacy: 'no'
@@ -17,17 +14,19 @@ default_context:
     email: contact@ionelmc.ro
     formatter_quote_style: single
     full_name: Ionel Cristian Mărieș
+    function_name: compute
     github_actions: 'yes'
     github_actions_osx: 'yes'
     github_actions_windows: 'yes'
     license: BSD 2-Clause License
+    module_name: cext
     package_name: lazy_object_proxy
     pre_commit: 'yes'
     project_name: lazy-object-proxy
     project_short_description: A fast and thorough lazy object proxy.
     pypi_badge: 'yes'
     pypi_disable_upload: 'no'
-    release_date: '2023-01-04'
+    release_date: '2023-12-15'
     repo_hosting: github.com
     repo_hosting_domain: github.com
     repo_main_branch: master
@@ -38,10 +37,11 @@ default_context:
     sphinx_docs: 'yes'
     sphinx_docs_hosting: https://python-lazy-object-proxy.readthedocs.io/
     sphinx_doctest: 'no'
-    sphinx_theme: sphinx-py3doc-enhanced-theme
+    sphinx_theme: furo
     test_matrix_separate_coverage: 'yes'
+    tests_inside_package: 'no'
     version: 1.10.0
     version_manager: bump2version
     website: https://blog.ionelmc.ro
     year_from: '2014'
-    year_to: '2023'
+    year_to: '2024'
diff --git a/.github/workflows/github-actions.yml b/.github/workflows/github-actions.yml
index f1366a9..a507797 100644
--- a/.github/workflows/github-actions.yml
+++ b/.github/workflows/github-actions.yml
@@ -1,5 +1,5 @@
 name: build
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 jobs:
   test:
     name: ${{ matrix.name }}
@@ -19,89 +19,6 @@ jobs:
             toxpython: 'python3.11'
             tox_env: 'docs'
             os: 'ubuntu-latest'
-          - name: 'py38-cover (ubuntu/x86_64)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-cover'
-            cover: true
-            cibw_arch: 'x86_64'
-            cibw_build: false
-            os: 'ubuntu-latest'
-          - name: 'py38-cover (windows/AMD64)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-cover'
-            cover: true
-            cibw_arch: 'AMD64'
-            cibw_build: false
-            os: 'windows-latest'
-          - name: 'py38-cover (macos/x86_64)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-cover'
-            cover: true
-            cibw_arch: 'x86_64'
-            cibw_build: false
-            os: 'macos-latest'
-          - name: 'py38-nocov (ubuntu/x86_64/manylinux)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: 'cp38-*manylinux*'
-            os: 'ubuntu-latest'
-          - name: 'py38-nocov (ubuntu/x86_64/musllinux)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: 'cp38-*musllinux*'
-            os: 'ubuntu-latest'
-          - name: 'py38-nocov (ubuntu/aarch64/manylinux)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'aarch64'
-            cibw_build: 'cp38-*manylinux*'
-            os: 'ubuntu-latest'
-          - name: 'py38-nocov (ubuntu/aarch64/musllinux)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'aarch64'
-            cibw_build: 'cp38-*musllinux*'
-            os: 'ubuntu-latest'
-          - name: 'py38-nocov (windows/AMD64)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'AMD64'
-            cibw_build: 'cp38-*'
-            os: 'windows-latest'
-          - name: 'py38-nocov (windows/x86)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x86'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'x86'
-            cibw_build: 'cp38-*'
-            os: 'windows-latest'
-          - name: 'py38-nocov (macos/x86_64)'
-            python: '3.8'
-            toxpython: 'python3.8'
-            python_arch: 'x64'
-            tox_env: 'py38-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: 'cp38-*'
-            os: 'macos-latest'
           - name: 'py39-cover (ubuntu/x86_64)'
             python: '3.9'
             toxpython: 'python3.9'
@@ -120,13 +37,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'py39-cover (macos/x86_64)'
+          - name: 'py39-cover (macos/arm64)'
             python: '3.9'
             toxpython: 'python3.9'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'py39-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'py39-nocov (ubuntu/x86_64/manylinux)'
@@ -169,20 +86,12 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: 'cp39-*'
             os: 'windows-latest'
-          - name: 'py39-nocov (windows/x86)'
+          - name: 'py39-nocov (macos/arm64)'
             python: '3.9'
             toxpython: 'python3.9'
-            python_arch: 'x86'
+            python_arch: 'arm64'
             tox_env: 'py39-nocov'
-            cibw_arch: 'x86'
-            cibw_build: 'cp39-*'
-            os: 'windows-latest'
-          - name: 'py39-nocov (macos/x86_64)'
-            python: '3.9'
-            toxpython: 'python3.9'
-            python_arch: 'x64'
-            tox_env: 'py39-nocov'
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: 'cp39-*'
             os: 'macos-latest'
           - name: 'py310-cover (ubuntu/x86_64)'
@@ -203,13 +112,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'py310-cover (macos/x86_64)'
+          - name: 'py310-cover (macos/arm64)'
             python: '3.10'
             toxpython: 'python3.10'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'py310-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'py310-nocov (ubuntu/x86_64/manylinux)'
@@ -252,20 +161,12 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: 'cp310-*'
             os: 'windows-latest'
-          - name: 'py310-nocov (windows/x86)'
+          - name: 'py310-nocov (macos/arm64)'
             python: '3.10'
             toxpython: 'python3.10'
-            python_arch: 'x86'
+            python_arch: 'arm64'
             tox_env: 'py310-nocov'
-            cibw_arch: 'x86'
-            cibw_build: 'cp310-*'
-            os: 'windows-latest'
-          - name: 'py310-nocov (macos/x86_64)'
-            python: '3.10'
-            toxpython: 'python3.10'
-            python_arch: 'x64'
-            tox_env: 'py310-nocov'
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: 'cp310-*'
             os: 'macos-latest'
           - name: 'py311-cover (ubuntu/x86_64)'
@@ -286,13 +187,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'py311-cover (macos/x86_64)'
+          - name: 'py311-cover (macos/arm64)'
             python: '3.11'
             toxpython: 'python3.11'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'py311-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'py311-nocov (ubuntu/x86_64/manylinux)'
@@ -335,20 +236,12 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: 'cp311-*'
             os: 'windows-latest'
-          - name: 'py311-nocov (windows/x86)'
+          - name: 'py311-nocov (macos/arm64)'
             python: '3.11'
             toxpython: 'python3.11'
-            python_arch: 'x86'
+            python_arch: 'arm64'
             tox_env: 'py311-nocov'
-            cibw_arch: 'x86'
-            cibw_build: 'cp311-*'
-            os: 'windows-latest'
-          - name: 'py311-nocov (macos/x86_64)'
-            python: '3.11'
-            toxpython: 'python3.11'
-            python_arch: 'x64'
-            tox_env: 'py311-nocov'
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: 'cp311-*'
             os: 'macos-latest'
           - name: 'py312-cover (ubuntu/x86_64)'
@@ -369,13 +262,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'py312-cover (macos/x86_64)'
+          - name: 'py312-cover (macos/arm64)'
             python: '3.12'
             toxpython: 'python3.12'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'py312-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'py312-nocov (ubuntu/x86_64/manylinux)'
@@ -418,72 +311,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: 'cp312-*'
             os: 'windows-latest'
-          - name: 'py312-nocov (windows/x86)'
+          - name: 'py312-nocov (macos/arm64)'
             python: '3.12'
             toxpython: 'python3.12'
-            python_arch: 'x86'
+            python_arch: 'arm64'
             tox_env: 'py312-nocov'
-            cibw_arch: 'x86'
+            cibw_arch: 'arm64'
             cibw_build: 'cp312-*'
-            os: 'windows-latest'
-          - name: 'py312-nocov (macos/x86_64)'
-            python: '3.12'
-            toxpython: 'python3.12'
-            python_arch: 'x64'
-            tox_env: 'py312-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: 'cp312-*'
-            os: 'macos-latest'
-          - name: 'pypy38-cover (ubuntu/x86_64)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-cover'
-            cover: true
-            cibw_arch: 'x86_64'
-            cibw_build: false
-            os: 'ubuntu-latest'
-          - name: 'pypy38-cover (windows/AMD64)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-cover'
-            cover: true
-            cibw_arch: 'AMD64'
-            cibw_build: false
-            os: 'windows-latest'
-          - name: 'pypy38-cover (macos/x86_64)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-cover'
-            cover: true
-            cibw_arch: 'x86_64'
-            cibw_build: false
-            os: 'macos-latest'
-          - name: 'pypy38-nocov (ubuntu/x86_64/manylinux)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: false
-            os: 'ubuntu-latest'
-          - name: 'pypy38-nocov (windows/AMD64)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-nocov'
-            cibw_arch: 'AMD64'
-            cibw_build: false
-            os: 'windows-latest'
-          - name: 'pypy38-nocov (macos/x86_64)'
-            python: 'pypy-3.8'
-            toxpython: 'pypy3.8'
-            python_arch: 'x64'
-            tox_env: 'pypy38-nocov'
-            cibw_arch: 'x86_64'
-            cibw_build: false
             os: 'macos-latest'
           - name: 'pypy39-cover (ubuntu/x86_64)'
             python: 'pypy-3.9'
@@ -503,13 +337,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'pypy39-cover (macos/x86_64)'
+          - name: 'pypy39-cover (macos/arm64)'
             python: 'pypy-3.9'
             toxpython: 'pypy3.9'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'pypy39-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'pypy39-nocov (ubuntu/x86_64/manylinux)'
@@ -528,12 +362,12 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'pypy39-nocov (macos/x86_64)'
+          - name: 'pypy39-nocov (macos/arm64)'
             python: 'pypy-3.9'
             toxpython: 'pypy3.9'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'pypy39-nocov'
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'pypy310-cover (ubuntu/x86_64)'
@@ -554,13 +388,13 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'pypy310-cover (macos/x86_64)'
+          - name: 'pypy310-cover (macos/arm64)'
             python: 'pypy-3.10'
             toxpython: 'pypy3.10'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'pypy310-cover'
             cover: true
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
           - name: 'pypy310-nocov (ubuntu/x86_64/manylinux)'
@@ -579,12 +413,12 @@ jobs:
             cibw_arch: 'AMD64'
             cibw_build: false
             os: 'windows-latest'
-          - name: 'pypy310-nocov (macos/x86_64)'
+          - name: 'pypy310-nocov (macos/arm64)'
             python: 'pypy-3.10'
             toxpython: 'pypy3.10'
-            python_arch: 'x64'
+            python_arch: 'arm64'
             tox_env: 'pypy310-nocov'
-            cibw_arch: 'x86_64'
+            cibw_arch: 'arm64'
             cibw_build: false
             os: 'macos-latest'
     steps:
@@ -606,11 +440,6 @@ jobs:
         pip --version
         tox --version
         pip list --format=freeze
-    - name: install dependencies (gdb)
-      if: >
-        !matrix.cibw_build && matrix.os == 'ubuntu'
-      run: >
-        sudo apt-get install gdb
     - name: cibw build and test
       if: matrix.cibw_build
       run: cibuildwheel
@@ -662,3 +491,6 @@ jobs:
     - uses: coverallsapp/github-action@v2
       with:
         parallel-finished: true
+    - uses: codecov/codecov-action@v3
+      with:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0a737a5..2124ee7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,16 +6,13 @@ exclude: '^(\.tox|ci/templates|\.bumpversion\.cfg)(/|$)'
 # Note the order is intentional to avoid multiple passes of the hooks
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.7
+    rev: v0.7.4
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix, --show-fixes]
-  - repo: https://github.com/psf/black
-    rev: 23.12.0
-    hooks:
-      - id: black
+      - id: ruff-format
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v5.0.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
diff --git a/LICENSE b/LICENSE
index 07630f9..b56dc6d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 BSD 2-Clause License
 
-Copyright (c) 2014-2023, Ionel Cristian Mărieș. All rights reserved.
+Copyright (c) 2014-2024, Ionel Cristian Mărieș. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 following conditions are met:
diff --git a/README.rst b/README.rst
index cac8bba..e429753 100644
--- a/README.rst
+++ b/README.rst
@@ -10,13 +10,11 @@ Overview
     * - docs
       - |docs|
     * - tests
-      - | |github-actions|
-        | |coveralls| |codecov|
+      - |github-actions| |coveralls| |codecov|
     * - package
-      - | |version| |wheel| |supported-versions| |supported-implementations|
-        | |commits-since|
+      - |version| |wheel| |supported-versions| |supported-implementations| |commits-since|
 .. |docs| image:: https://readthedocs.org/projects/python-lazy-object-proxy/badge/?style=flat
-    :target: https://python-lazy-object-proxy.readthedocs.io/
+    :target: https://readthedocs.org/projects/python-lazy-object-proxy/
     :alt: Documentation Status
 
 .. |github-actions| image:: https://github.com/ionelmc/python-lazy-object-proxy/actions/workflows/github-actions.yml/badge.svg
@@ -91,11 +89,18 @@ Installation
 
     pip install lazy-object-proxy
 
+You can also install the in-development version with::
+
+    pip install https://github.com/ionelmc/python-lazy-object-proxy/archive/master.zip
+
+
 Documentation
 =============
 
+
 https://python-lazy-object-proxy.readthedocs.io/
 
+
 Development
 ===========
 
diff --git a/ci/requirements.txt b/ci/requirements.txt
index a1708f4..b4f1852 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -1,6 +1,5 @@
 virtualenv>=16.6.0
 pip>=19.1.1
 setuptools>=18.0.1
-six>=1.14.0
 tox
 twine
diff --git a/ci/templates/.github/workflows/github-actions.yml b/ci/templates/.github/workflows/github-actions.yml
index 55e98d3..fb89fec 100644
--- a/ci/templates/.github/workflows/github-actions.yml
+++ b/ci/templates/.github/workflows/github-actions.yml
@@ -1,5 +1,5 @@
 name: build
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 jobs:
   test:
     name: {{ '${{ matrix.name }}' }}
@@ -36,8 +36,7 @@ jobs:
     ['ubuntu', 'x64', 'aarch64', '*manylinux*', False],
     ['ubuntu', 'x64', 'aarch64', '*musllinux*', False],
     ['windows', 'x64', 'AMD64', '*', True],
-    ['windows', 'x86', 'x86', '*', False],
-    ['macos', 'x64', 'x86_64', '*', True],
+    ['macos', 'arm64', 'arm64', '*', True],
 ] %}
 {% if include_cover or ('nocov' in env and not prefix.startswith('pypy')) %}
 {% set wheel_suffix = 'nocov' in env and wheel_arch.strip('*') %}
@@ -135,3 +134,6 @@ jobs:
     - uses: coverallsapp/github-action@v2
       with:
         parallel-finished: true
+    - uses: codecov/codecov-action@v3
+      with:
+        CODECOV_TOKEN: {% raw %}${{ secrets.CODECOV_TOKEN }}{% endraw %}
diff --git a/docs/conf.py b/docs/conf.py
index f6d031a..18f3f99 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,7 +1,3 @@
-import traceback
-
-import sphinx_py3doc_enhanced_theme
-
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.autosummary',
@@ -16,7 +12,7 @@
 source_suffix = '.rst'
 master_doc = 'index'
 project = 'lazy-object-proxy'
-year = '2014-2023'
+year = '2014-2024'
 author = 'Ionel Cristian Mărieș'
 copyright = f'{year}, {author}'
 try:
@@ -24,17 +20,19 @@
 
     version = release = get_distribution('lazy_object_proxy').version
 except Exception:
+    import traceback
+
     traceback.print_exc()
     version = release = '1.10.0'
 
 pygments_style = 'trac'
 templates_path = ['.']
 extlinks = {
-    'issue': ('https://github.com/ionelmc/python-lazy-object-proxy/issues/%s', '#'),
-    'pr': ('https://github.com/ionelmc/python-lazy-object-proxy/pull/%s', 'PR #'),
+    'issue': ('https://github.com/ionelmc/python-lazy-object-proxy/issues/%s', '#%s'),
+    'pr': ('https://github.com/ionelmc/python-lazy-object-proxy/pull/%s', 'PR #%s'),
 }
-html_theme = 'sphinx_py3doc_enhanced_theme'
-html_theme_path = [sphinx_py3doc_enhanced_theme.get_html_theme_path()]
+
+html_theme = 'furo'
 html_theme_options = {
     'githuburl': 'https://github.com/ionelmc/python-lazy-object-proxy/',
 }
@@ -42,9 +40,6 @@
 html_use_smartypants = True
 html_last_updated_fmt = '%b %d, %Y'
 html_split_index = False
-html_sidebars = {
-    '**': ['searchbox.html', 'globaltoc.html', 'sourcelink.html'],
-}
 html_short_title = f'{project}-{version}'
 
 napoleon_use_ivar = True
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 62bc14e..c03e307 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,2 @@
 sphinx>=1.3
-sphinx-py3doc-enhanced-theme
+furo
diff --git a/pyproject.toml b/pyproject.toml
index f84e2f2..6632079 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,11 +7,16 @@ build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]
 
-[tool.ruff.per-file-ignores]
-"ci/*" = ["S"]
-
 [tool.ruff]
 extend-exclude = ["static", "ci/templates"]
+line-length = 140
+src = ["src", "tests"]
+target-version = "py39"
+
+[tool.ruff.lint.per-file-ignores]
+"ci/*" = ["S"]
+
+[tool.ruff.lint]
 ignore = [
     "RUF001", # ruff-specific rules ambiguous-unicode-character-string
     "S101", # flake8-bandit assert
@@ -23,7 +28,6 @@ ignore = [
     "B004",
     "S102",
 ]
-line-length = 140
 select = [
     "B", # flake8-bugbear
     "C4", # flake8-comprehensions
@@ -38,28 +42,20 @@ select = [
     "PLE", # pylint errors
     "PT", # flake8-pytest-style
     "PTH", # flake8-use-pathlib
-    "Q", # flake8-quotes
     "RSE", # flake8-raise
     "RUF", # ruff-specific rules
     "S", # flake8-bandit
     "UP", # pyupgrade
     "W", # pycodestyle warnings
 ]
-src = ["src", "tests"]
-target-version = "py38"
 
-[tool.ruff.flake8-pytest-style]
+[tool.ruff.lint.flake8-pytest-style]
 fixture-parentheses = false
 mark-parentheses = false
 
-[tool.ruff.isort]
+[tool.ruff.lint.isort]
 forced-separate = ["conftest"]
 force-single-line = true
 
-[tool.black]
-line-length = 140
-target-version = ["py38"]
-skip-string-normalization = true
-
-[tool.ruff.flake8-quotes]
-inline-quotes = "single"
+[tool.ruff.format]
+quote-style = "single"
diff --git a/setup.py b/setup.py
index 30f84c6..d7a0044 100755
--- a/setup.py
+++ b/setup.py
@@ -105,7 +105,6 @@ def read(*names, **kwargs):
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3 :: Only',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
@@ -126,14 +125,14 @@ def read(*names, **kwargs):
     keywords=[
         # eg: "keyword1", "keyword2", "keyword3",
     ],
-    python_requires='>=3.8',
+    python_requires='>=3.9',
     install_requires=[
         # eg: "aspectlib==1.1.1", "six>=1.7",
     ],
     extras_require={
         # eg:
         #   "rst": ["docutils>=0.11"],
-        #   ":python_version=="2.6"": ["argparse"],
+        #   ":python_version=='3.8'": ["backports.zoneinfo"],
     },
     setup_requires=[
         'setuptools_scm>=3.3.1',
diff --git a/tox.ini b/tox.ini
index 57f7222..37b2254 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,16 +14,14 @@ envlist =
     clean,
     check,
     docs,
-    {py38,py39,py310,py311,py312,pypy38,pypy39,pypy310}-{cover,nocov},
+    {py39,py310,py311,py312,pypy39,pypy310}-{cover,nocov},
     report
 ignore_basepython_conflict = true
 
 [testenv]
 basepython =
-    pypy38: {env:TOXPYTHON:pypy3.8}
     pypy39: {env:TOXPYTHON:pypy3.9}
     pypy310: {env:TOXPYTHON:pypy3.10}
-    py38: {env:TOXPYTHON:python3.8}
     py39: {env:TOXPYTHON:python3.9}
     py310: {env:TOXPYTHON:python3.10}
     py311: {env:TOXPYTHON:python3.11}
@@ -84,7 +82,10 @@ commands =
     coverage html
 
 [testenv:clean]
-commands = coverage erase
+commands =
+    python setup.py clean
+    coverage erase
 skip_install = true
 deps =
+    setuptools
     coverage