diff --git a/docs/developing.rst b/docs/developing.rst
index 9120d2b0f..d8cbaba23 100644
--- a/docs/developing.rst
+++ b/docs/developing.rst
@@ -233,4 +233,4 @@ At this point, everything should be ready to run the tests on the Docker image.
 .. _embedded: https://sphinx-gallery.github.io/stable/syntax.html#embedding-rst
 .. _IPython Sphinx Directives: https://ipython.readthedocs.io/en/stable/sphinxext.html
 .. _isort: https://github.com/PyCQA/isort
-.. _flake8: https://github.com/PyCQA/flake8
+.. _ruff: https://github.com/astral-sh/ruff
diff --git a/imod-environment-dev.yml b/imod-environment-dev.yml
index 91c9be98a..a5628e5d1 100644
--- a/imod-environment-dev.yml
+++ b/imod-environment-dev.yml
@@ -4,7 +4,7 @@ channels:
 
 dependencies:
     - black
-    - flake8
+    - ruff
     - hypothesis
     - isort
     - mypy
diff --git a/pyproject.toml b/pyproject.toml
index 27248cb42..5198a2f99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,13 +2,136 @@
 requires = ["setuptools>=42", "wheel"]
 build-backend = "setuptools.build_meta"
 
+[project]
+name = "imod"
+version = "0.15.0"
+requires-python = ">=3.10"
+authors = [
+    { name = "Deltares", email = "huite.bootsma@deltares.nl" },
+]
+maintainers = [
+    { name = "Deltares", email = "huite.bootsma@deltares.nl" }
+]
+description = "Make massive MODFLOW models!"
+readme = "README.rst"
+license = { file = "LICENSE" }
+keywords = ["imod", "modflow", "groundwater modeling"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Science/Research",
+    "Topic :: Scientific/Engineering :: Hydrology",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "opic :: Scientific/Engineering"
+]
+dependencies = [
+    "affine",
+    "cftime >=1",
+    "dask",
+    "fastcore",
+    "Jinja2",
+    "matplotlib",
+    "numba",
+    "numpy",
+    "pandas",
+    "pooch",
+    "scipy",
+    "tomli_w",
+    "toolz",
+    "tqdm",
+    "xarray >=0.15",
+    "xugrid >=0.3.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/Deltares/imod-python"
+Documentation = "https://deltares.github.io/imod-python/"
+Repository = "https://github.com/Deltares/imod-python.git"
+"Bug Tracker" = "https://github.com/Deltares/imod-python/issues"
+Changelog = "https://github.com/Deltares/imod-python/blob/master/docs/api/changelog.rst"
+
+[project.optional-dependencies]
+all = [
+    "bottleneck",
+    "contextily >=1",
+    "cytoolz",
+    "geopandas",
+    "pyvista",
+    "rasterio >=1",
+    "rioxarray",
+    "shapely >=1.8",
+    "tomli >= 1.1.0 ; python_version < '3.11'",
+    "zarr",
+]
+dev = [
+    "imod[all]",
+    "black",
+    "ruff",
+    "flopy",
+    "hypothesis",
+    "mypy",
+    "pydata-sphinx-theme",
+    "pytest",
+    "pytest-cov",
+    "pytest-benchmark",
+    "sphinx",
+    "sphinx-gallery",
+]
+
 [tool.isort]
 profile = "black"
 
 [tool.coverage.report]
 exclude_lines = [
-  "pragma: no cover",
+    "pragma: no cover",
+]
+
+[tool.ruff.lint]
+select = ["C4", "E", "F", "I"]
+ignore = [
+    "C401",
+    "C402",
+    "C403",
+    "C404",
+    "C408",
+    "C416",
+    "C417",
+    "C419",
+    "D202",
+    "D205",
+    "D206",
+    "D400",
+    "D404",
+    "C405",
+    "E402",
+    "E501",
+    "E703",
+    "E713",
+    "E721",
+    "E731",
+    "E741",
+    "F811",
+    "PD002",
+    "PD901",
+    "PD003",
+    "PD004",
 ]
+fixable = ["I"]
+ignore-init-module-imports = true
+
+[tool.ruff.lint.pydocstyle]
+convention = "numpy"
+
+[tool.ruff.lint.per-file-ignores]
+"./docs/conf.py" = ["F401"]
+"__init__.py" = ["F401"]
+"conftest.py" = ["F401"]
+"test_examples.py" = ["F401"]
 
 [tool.mypy]
 files = "imod/mf6/**.py"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index bf32d1190..000000000
--- a/setup.cfg
+++ /dev/null
@@ -1,96 +0,0 @@
-[metadata]
-name = imod
-version = 0.15.0
-author = Deltares
-author_email = huite.bootsma@deltares.nl
-description = Make massive MODFLOW models
-url=https://github.com/Deltares/imod-python
-project_urls =
-    Code=https://github.com/Deltares/imod-python
-    Issues=https://github.com/Deltares/imod-python/issues
-long_description = file: README.rst
-long_description_content_type = text/x-rst
-license = MIT
-classifiers =
-    Development Status :: 4 - Beta
-    Intended Audience :: Science/Research
-    Topic :: Scientific/Engineering :: Hydrology
-    License :: OSI Approved :: MIT License
-    Operating System :: OS Independent
-    Programming Language :: Python
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
-    Programming Language :: Python :: 3.10
-    Programming Language :: Python :: Implementation :: CPython
-    Topic :: Scientific/Engineering
-keywords = 
-    imod
-    modflow
-    groundwater modeling
-    
-[options]
-packages = find:
-include_package_data = True
-python_requires = >=3.10
-install_requires =
-    affine
-    cftime >=1
-    dask
-    fastcore
-    Jinja2
-    matplotlib
-    numba
-    numpy
-    pandas
-    pooch
-    scipy
-    tomli_w
-    toolz
-    tqdm
-    xarray >=0.15
-    xugrid >=0.3.0
-    
-[options.extras_require]
-all = 
-    bottleneck
-    contextily >=1
-    cytoolz
-    geopandas
-    pyvista
-    rasterio >=1
-    rioxarray
-    shapely >=1.8
-    tomli >= 1.1.0 ; python_version < "3.11"
-    zarr
-dev =
-    %(all)s
-    black
-    flake8
-    flopy
-    hypothesis
-    mypy
-    pydata-sphinx-theme
-    pytest
-    pytest-cov
-    pytest-benchmark
-    sphinx
-    sphinx-gallery
-
-[flake8]
-ignore =
-    # whitespace before ':' - doesn't work well with black
-    E203,
-    # module level import not at top of file
-    E402,
-    # line too long - let black worry about that
-    E501,
-    # line break before binary operator
-    W503,
-    # duplicate function definitions, doesn't work with type dispatching. 
-    F811,
-per-file-ignores = 
-    ./docs/conf.py:F401
-    __init__.py:F401
-    conftest.py:F401
-    test_examples.py:F401
\ No newline at end of file