diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000..e8429c6
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,13 @@
+[flake8]
+doctests = 1
+ignore =
+    # black takes care of line length
+    E501,
+    # black takes care of where to break lines
+    W503,
+    # black takes care of spaces within slicing (list[:])
+    E203,
+    # black takes care of spaces after commas
+    E231,
+    # as one has to use self.XX it should not be a problem
+    A003,
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1df8c91..79f07ff 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,33 +1,20 @@
 name: Testing
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 jobs:
   test:
-    name: py-${{ matrix.python-version }}/isort-${{ matrix.isort }}/flake8-${{ matrix.flake8 }}
-    runs-on: ubuntu-latest
+    name: Testing on
+    runs-on: "ubuntu-latest"
     strategy:
       matrix:
-        python-version: ["3.12.0-beta.2", "3.11", "3.10", 3.9, 3.8, pypy-3.9]
-        isort: [5.11.2]
-        flake8: [5.0.4]
-        include:
-          - python-version: 3.9
-            isort: 5.11.2
-            flake8: 4.0.1
-            qa: 'true'
-          - python-version: 3.9
-            isort: 5.11.2
-            flake8: 3.9.2
-          - python-version: 3.9
-            isort: 5.11.2
-            flake8: 6.0.0
+        python-version: ["3.12", "3.11", "3.10", 3.9, 3.8, pypy-3.9]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -36,52 +23,36 @@ jobs:
         uses: actions/cache@v3
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('requirements.txt') }}
+          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('tox.ini') }}
           restore-keys: |
             ${{ runner.os }}-pip-${{ matrix.python-version }}-
-      - name: pip version
-        run: pip --version
       - name: Install dependencies
-        if: matrix.qa != 'true'
-        run: |
-          python -m pip install -r requirements.txt
-          pip install 'isort==${{ matrix.isort }}' 'flake8==${{ matrix.flake8 }}'
-      - name: Install dependencies
-        if: matrix.qa == 'true'
-        run: |
-          python -m pip install -r requirements-lint.txt
-          pip install 'isort==${{ matrix.isort }}' 'flake8==${{ matrix.flake8 }}'
-      # isort 4.x requires `toml` to be able to read pyproject.toml, so install it...
-      - name: Install toml if required
-        run: pip install toml
-        if: matrix.isort == '4.3.21'
-      # formatters
-      - name: Run pyupgrade
-        if: matrix.qa == 'true'
-        run: pyupgrade --py37-plus *.py
-      - name: Run isort
-        if: matrix.qa == 'true'
-        run: isort --check-only *.py
-      - name: Run black
-        if: matrix.qa == 'true'
-        run: black --check --skip-string-normalization *.py
-      # linters
-      - name: Lint with bandit
-        if: matrix.qa == 'true'
-        run: bandit --skip B101 *.py  # B101 is assert statements
-      - name: Lint with codespell
-        if: matrix.qa == 'true'
-        run: codespell *.rst *.py
-      - name: Lint with flake8
-        if: matrix.qa == 'true'
-        run: flake8 *.py --count --max-complexity=18 --max-line-length=88 --show-source --statistics
-      - name: Lint with mypy
-        if: matrix.qa == 'true'
-        run: |
-          mkdir --parents --verbose .mypy_cache
-          mypy --ignore-missing-imports --install-types --non-interactive *.py || true
-      # tests and coverage
+        run: python -m pip install tox
       - name: Test
-        run: pytest run_tests.py --cov --cov-report term-missing
-      - name: Coverage
-        run: coveralls --service=github
+        run: tox -e test
+
+  lint:
+    name: Lint code
+    runs-on: "ubuntu-latest"
+    strategy:
+      matrix:
+        python-version: [3.8]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Cache packages
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cache/pre-commit
+            ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('tox.ini') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-${{ matrix.python-version }}-
+      - name: Install dependencies
+        run: python -m pip install tox
+      - name: Run linting
+        run: tox -e lint
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..3f26833
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,51 @@
+ci:
+    autofix_prs: false
+    autoupdate_schedule: monthly
+
+repos:
+-   repo: https://github.com/asottile/pyupgrade
+    rev: v3.14.0
+    hooks:
+    -   id: pyupgrade
+        args: [--py38-plus]
+-   repo: https://github.com/pycqa/isort
+    rev: 5.12.0
+    hooks:
+    -   id: isort
+-   repo: https://github.com/psf/black
+    rev: 23.9.1
+    hooks:
+    -   id: black
+-   repo: https://github.com/PyCQA/flake8
+    rev: 6.1.0
+    hooks:
+    -   id: flake8
+        additional_dependencies:
+          - flake8-bugbear
+          - flake8-builtins
+          - flake8-comprehensions
+          - flake8-debugger
+          - flake8-deprecated
+          - flake8-isort
+          - flake8-pep3101
+          - flake8-print
+          - flake8-quotes
+
+-   repo: https://github.com/codespell-project/codespell
+    rev: v2.2.6
+    hooks:
+    -   id: codespell
+        additional_dependencies:
+          - tomli
+-   repo: https://github.com/mgedmin/check-manifest
+    rev: "0.49"
+    hooks:
+    -   id: check-manifest
+-   repo: https://github.com/regebro/pyroma
+    rev: "4.2"
+    hooks:
+    -   id: pyroma
+-   repo: https://github.com/mgedmin/check-python-versions
+    rev: "0.21.3"
+    hooks:
+    -   id: check-python-versions
diff --git a/CHANGES.rst b/CHANGES.rst
index 2871390..434cb46 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,8 +6,17 @@ Changelog
 6.1.1 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Switch from `setup.cfg` to `setup.py`.
+  [deronnax]
+
+- Switch from `setuptools` to `hatchling`.
+  [gforcada]
 
+- Switch to `main` branch.
+  [gforcada]
+
+- Use `tox` and `pre-commit` to ease project maintenance.
+  [gforcada]
 
 6.1.0 (2023-09-15)
 ------------------
diff --git a/flake8_isort.py b/flake8_isort.py
index 8de084e..ae1b173 100644
--- a/flake8_isort.py
+++ b/flake8_isort.py
@@ -1,11 +1,12 @@
-import warnings
 from contextlib import redirect_stdout
 from difflib import unified_diff
-from importlib.metadata import PackageNotFoundError, version
+from importlib.metadata import PackageNotFoundError
+from importlib.metadata import version
 from io import StringIO
 from pathlib import Path
 
 import isort
+import warnings
 
 
 def _version():
diff --git a/pyproject.toml b/pyproject.toml
index 09834cf..0fbcaad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,55 +1,61 @@
 [build-system]
-requires = ["setuptools>=61.2"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "flake8-isort"
 version = "6.1.1.dev0"
-authors = [{ name = "Gil Forcada", email = "gil.gnome@gmail.com" }]
-license = { text = "GPL version 2" }
-description = "flake8 plugin that integrates isort ."
+authors = [
+  { name="Gil Forcada Codinachs", email="gil.gnome@gmail.com" },
+]
+description = "flake8 plugin that integrates isort"
 keywords = ["pep8", "flake8", "python", "isort", "imports"]
+license = {file = "LICENSE"}
 readme = "README.rst"
+requires-python = ">=3.8"
 classifiers = [
-    "Development Status :: 5 - Production/Stable",
-    "Environment :: Console",
-    "Framework :: Flake8",
-    "Intended Audience :: Developers",
-    "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
-    "Operating System :: OS Independent",
-    "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",
-    "Programming Language :: Python :: Implementation :: CPython",
-    "Programming Language :: Python :: Implementation :: PyPy",
-    "Topic :: Software Development",
-    "Topic :: Software Development :: Quality Assurance",
+        "Development Status :: 5 - Production/Stable",
+        "Environment :: Console",
+        "Framework :: Flake8",
+        'Framework :: Plone',
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: GNU General Public License v2 (GPLv2)",
+        "Operating System :: OS Independent",
+        "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",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: Implementation :: CPython",
+        "Programming Language :: Python :: Implementation :: PyPy",
+        "Topic :: Software Development",
+        "Topic :: Software Development :: Quality Assurance",
 ]
-urls = { Homepage = "https://github.com/gforcada/flake8-isort" }
-requires-python = ">=3.8"
 dependencies = ["flake8", "isort >= 5.0.0, <6"]
 
-[project.entry-points]
-"flake8.extension" = { I00 = "flake8_isort:Flake8Isort" }
+[project.urls]
+"Homepage" = "https://github.com/gforcada/flake8-isort"
+"Bug Tracker" = "https://github.com/gforcada/flake8-isort/issues"
+"Changelog" = "https://github.com/gforcada/flake8-isort/blob/main/CHANGES.rst"
 
 [project.optional-dependencies]
 test = ["pytest"]
 
-[tool.setuptools]
-py-modules = ["flake8_isort"]
-zip-safe = false
-include-package-data = true
+[project.entry-points."flake8.extension"]
+I00 = "flake8_isort:Flake8Isort"
+
+[tool.isort]
+profile = "plone"
 
-[tool."zest.releaser"]
-create-wheel = "yes"
+[tool.black]
+target-version = ["py38"]
+skip-string-normalization = true
 
 [tool.check-manifest]
-ignore = """
-.installed.cfg"""
-
-[tool.isort]
-profile = "black"
+ignore = [
+    ".vscode/*",
+    "venv/*",
+]
diff --git a/requirements-lint.in b/requirements-lint.in
deleted file mode 100644
index 85e1ab8..0000000
--- a/requirements-lint.in
+++ /dev/null
@@ -1,22 +0,0 @@
-bandit
-black
-codespell
-coveralls
-flake8-blind-except
-flake8-bugbear
-flake8-comprehensions
-flake8-debugger
-flake8-deprecated
-flake8-isort
-flake8-pep3101
-flake8-print
-flake8-quotes
-flake8-todo
-importlib-metadata; python_version < '3.8'
-isort
-mypy
-pytest
-pytest-cov
-pyupgrade
-typed-ast; python_version < '3.8'  # dependency of black and mypy
-zipp; python_version < '3.8'  # dependency of importlib-metadata
diff --git a/requirements-lint.txt b/requirements-lint.txt
deleted file mode 100644
index 7a6fac0..0000000
--- a/requirements-lint.txt
+++ /dev/null
@@ -1,139 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.8
-# by the following command:
-#
-#    pip-compile requirements-lint.in
-#
-attrs==23.1.0
-    # via flake8-bugbear
-bandit==1.7.5
-    # via -r requirements-lint.in
-black==23.9.1
-    # via -r requirements-lint.in
-certifi==2023.7.22
-    # via requests
-charset-normalizer==3.2.0
-    # via requests
-click==8.1.7
-    # via black
-codespell==2.2.5
-    # via -r requirements-lint.in
-coverage[toml]==6.5.0
-    # via
-    #   coveralls
-    #   pytest-cov
-coveralls==3.3.1
-    # via -r requirements-lint.in
-docopt==0.6.2
-    # via coveralls
-exceptiongroup==1.1.3
-    # via pytest
-flake8==6.1.0
-    # via
-    #   flake8-bugbear
-    #   flake8-comprehensions
-    #   flake8-debugger
-    #   flake8-deprecated
-    #   flake8-isort
-    #   flake8-pep3101
-    #   flake8-print
-    #   flake8-quotes
-flake8-blind-except==0.2.1
-    # via -r requirements-lint.in
-flake8-bugbear==23.7.10
-    # via -r requirements-lint.in
-flake8-comprehensions==3.14.0
-    # via -r requirements-lint.in
-flake8-debugger==4.1.2
-    # via -r requirements-lint.in
-flake8-deprecated==2.0.1
-    # via -r requirements-lint.in
-flake8-isort==6.0.0
-    # via -r requirements-lint.in
-flake8-pep3101==2.0.0
-    # via -r requirements-lint.in
-flake8-print==5.0.0
-    # via -r requirements-lint.in
-flake8-quotes==3.3.2
-    # via -r requirements-lint.in
-flake8-todo==0.7
-    # via -r requirements-lint.in
-gitdb==4.0.10
-    # via gitpython
-gitpython==3.1.36
-    # via bandit
-idna==3.4
-    # via requests
-iniconfig==2.0.0
-    # via pytest
-isort==5.12.0
-    # via
-    #   -r requirements-lint.in
-    #   flake8-isort
-markdown-it-py==3.0.0
-    # via rich
-mccabe==0.7.0
-    # via flake8
-mdurl==0.1.2
-    # via markdown-it-py
-mypy==1.5.1
-    # via -r requirements-lint.in
-mypy-extensions==1.0.0
-    # via
-    #   black
-    #   mypy
-packaging==23.1
-    # via
-    #   black
-    #   pytest
-pathspec==0.11.2
-    # via black
-pbr==5.11.1
-    # via stevedore
-platformdirs==3.10.0
-    # via black
-pluggy==1.3.0
-    # via pytest
-pycodestyle==2.11.0
-    # via
-    #   flake8
-    #   flake8-debugger
-    #   flake8-print
-    #   flake8-todo
-pyflakes==3.1.0
-    # via flake8
-pygments==2.16.1
-    # via rich
-pytest==7.4.2
-    # via
-    #   -r requirements-lint.in
-    #   pytest-cov
-pytest-cov==4.1.0
-    # via -r requirements-lint.in
-pyupgrade==3.10.1
-    # via -r requirements-lint.in
-pyyaml==6.0.1
-    # via bandit
-requests==2.31.0
-    # via coveralls
-rich==13.5.2
-    # via bandit
-smmap==5.0.0
-    # via gitdb
-stevedore==5.1.0
-    # via bandit
-tokenize-rt==5.2.0
-    # via pyupgrade
-tomli==2.0.1
-    # via
-    #   black
-    #   coverage
-    #   mypy
-    #   pytest
-typing-extensions==4.7.1
-    # via
-    #   black
-    #   mypy
-    #   rich
-urllib3==2.0.4
-    # via requests
diff --git a/requirements.in b/requirements.in
deleted file mode 100644
index 09ff3bd..0000000
--- a/requirements.in
+++ /dev/null
@@ -1,5 +0,0 @@
-coveralls
-flake8
-isort
-pytest
-pytest-cov
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 269819b..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-#
-# This file is autogenerated by pip-compile with Python 3.8
-# by the following command:
-#
-#    pip-compile requirements.in
-#
-certifi==2023.7.22
-    # via requests
-charset-normalizer==3.2.0
-    # via requests
-coverage[toml]==6.5.0
-    # via
-    #   coveralls
-    #   pytest-cov
-coveralls==3.3.1
-    # via -r requirements.in
-docopt==0.6.2
-    # via coveralls
-exceptiongroup==1.1.3
-    # via pytest
-flake8==6.1.0
-    # via -r requirements.in
-idna==3.4
-    # via requests
-iniconfig==2.0.0
-    # via pytest
-isort==5.12.0
-    # via -r requirements.in
-mccabe==0.7.0
-    # via flake8
-packaging==23.1
-    # via pytest
-pluggy==1.3.0
-    # via pytest
-pycodestyle==2.11.0
-    # via flake8
-pyflakes==3.1.0
-    # via flake8
-pytest==7.4.2
-    # via
-    #   -r requirements.in
-    #   pytest-cov
-pytest-cov==4.1.0
-    # via -r requirements.in
-requests==2.31.0
-    # via coveralls
-tomli==2.0.1
-    # via
-    #   coverage
-    #   pytest
-urllib3==2.0.4
-    # via requests
diff --git a/tox.ini b/tox.ini
index a2df03a..bfb4fc1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,13 +1,51 @@
 [tox]
-env_list =
+min_version = 4.4.0
+envlist =
+    format
+    lint
+    coverage
+    py38
+    py39
     py310
-minversion = 4.11.3
+    py311
+    py312
+    pypy3
 
-[testenv]
-description = run the tests with pytest
-package = wheel
-wheel_build_env = .pkg
+[testenv:test]
+description = run the distribution tests
+use_develop = true
+skip_install = false
+constrain_package_deps = true
+commands =
+    pytest run_tests.py
+extras =
+    test
+
+[testenv:format]
+description = automatically reformat code
+skip_install = true
+deps =
+    pre-commit
+commands =
+    pre-commit run -a pyupgrade
+    pre-commit run -a isort
+    pre-commit run -a black
+
+[testenv:lint]
+description = run linters that will help improve the code style
+skip_install = true
+deps =
+    pre-commit
+commands =
+    pre-commit run -a
+
+[testenv:coverage]
+description = get a test coverage report
+use_develop = true
+skip_install = false
 deps =
-    pytest>=6
+    coverage
 commands =
-    pytest {tty:--color=yes} run_tests.py {posargs}
+    pytest run_tests.py --cov --cov-report term-missing
+extras =
+    test