diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dcc24e..fb07c8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 
 ### Internal changes
 
+- Consolidate package metadata and configuration in *pyproject.toml*   ([#165](https://github.com/mpytools/mplotutils/pull/165)).
 - Replace deprecated `matplotlib.rcsetup.all_backends` with `matplotlib.backends.backend_registry.list_builtin()`
   ([#160](https://github.com/mpytools/mplotutils/pull/160)).
 - Also upload coverage report in upstream dev CI ([#162](https://github.com/mpytools/mplotutils/pull/162)).
diff --git a/docs/installation.md b/docs/installation.md
index 70af9aa..1fb1273 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -6,11 +6,11 @@
 - [cartopy](http://scitools.org.uk/cartopy/) (0.23 or later)
 - [matplotlib](http://matplotlib.org/) (3.9 or later)
 - [numpy](http://www.numpy.org/) (1.26 or later)
+- [xarray](http://xarray.pydata.org/) (2024.7 or later)
 
 ## Optional dependencies
 
 - [seaborn](https://seaborn.pydata.org/) (0.13 or later)
-- [xarray](http://xarray.pydata.org/) (2024.7 or later)
 
 ## Instructions
 
diff --git a/pyproject.toml b/pyproject.toml
index d5bce08..a51a7ac 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,68 @@
+[project]
+name = "mplotutils"
+authors = [{name = "mplotutils developers", email = "mathias.hauser@env.ethz.com"}]
+license = "GPL-3.0-only"
+keywords = ['matplotlib cartopy plotting']
+description = "utilities for matplotlib and cartopy"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Operating System :: OS Independent",
+    "Intended Audience :: Science/Research",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Topic :: Scientific/Engineering",
+    "Topic :: Scientific/Engineering :: Atmospheric Science",
+    "Topic :: Scientific/Engineering :: GIS",
+]
+requires-python = ">=3.11"
+dependencies = [
+    "cartopy >=0.23",
+    "matplotlib >=3.9",
+    "packaging >= 23.1",
+    "numpy >=1.26",
+    "xarray >=2024.7",
+]
+dynamic = ["version"]
+
+[project.readme]
+file = "README.md"
+content-type = "text/markdown"
+
+[project.urls]
+Homepage = "https://github.com/mpytools/mplotutils"
+Documentation = "https://github.com/mpytools/mplotutils"
+Source = "https://github.com/mpytools/mplotutils"
+BugReports = "https://github.com/mpytools/mplotutils/issues"
+
+[project.optional-dependencies]
+full = [
+  "seaborn",
+]
+
+[dependency-groups]
+# docs = [
+    # "mplotutils[full]",
+    # dependencies to build the docs
+    # "numpydoc",
+    # "sphinx",
+# ]
+tests = [
+    "pytest-cov",
+    "pytest-xdist",
+    "pytest",
+]
+dev = [
+    "regionmask[full, tests]", # docs
+    "black !=23",
+    "ruff",
+]
+
+[tool.setuptools.packages]
+find = {namespaces = false}  # Disable implicit namespaces
+
 [build-system]
 requires = [
     "setuptools>=42",
@@ -42,3 +107,8 @@ log_cli_level = "INFO"
 filterwarnings = [
     "ignore:numpy.ufunc size changed, may indicate binary incompatibility.:RuntimeWarning"
 ]
+
+[tool.coverage.run]
+omit = [
+  "*/mplotutils/tests/*",
+]
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index d006210..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# This file is redundant with setup.cfg;
-# it exists to let GitHub build the repository dependency graph
-# https://help.github.com/en/github/visualizing-repository-data-with-graphs/listing-the-packages-that-a-repository-depends-on
-
-cartopy >= 0.23
-matplotlib >= 3.9
-numpy >= 1.26
-xarray >= 2024.7
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 66e8299..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,34 +0,0 @@
-[metadata]
-name = mplotutils
-description = utilities for matplotlib and cartopy
-author = mathause
-author_email = mathias.hauser@env.ethz.com
-license = GPLv3
-url = https://github.com/mpytools/mplotutils
-long_description_content_type=text/markdown
-long_description = file: README.md
-classifiers =
-    Development Status :: 4 - Beta
-    License :: OSI Approved :: MIT License
-    Operating System :: OS Independent
-    Intended Audience :: Science/Research
-    Programming Language :: Python
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.11
-    Programming Language :: Python :: 3.12
-    Programming Language :: Python :: 3.13
-
-[options]
-packages = find:
-zip_safe = False  # https://mypy.readthedocs.io/en/latest/installed_packages.html
-include_package_data = True
-python_requires = >=3.11
-install_requires =
-    cartopy >=0.23
-    matplotlib >=3.9
-    numpy >=1.26
-    xarray >=2024.7
-
-[coverage:run]
-omit =
-    */tests/*,
diff --git a/setup.py b/setup.py
deleted file mode 100644
index cfccdc5..0000000
--- a/setup.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from setuptools import setup
-
-setup(use_scm_version={"fallback_version": "999", "version_scheme": "no-guess-dev"})