diff --git a/pyproject.toml b/pyproject.toml
index 169fb16..a4b6e37 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,103 @@
+[project]
+name = "ci_watson"
+description = "CI helper for STScI Jenkins"
+requires-python = ">=3.9"
+authors = [
+    { name = "STScI", email = "help@stsci.edu" },
+]
+classifiers = [
+    "Framework :: Pytest",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: BSD License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Topic :: Software Development :: Testing",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+]
+dependencies = [
+    "pytest>=6",
+    "requests",
+    "crds",
+]
+dynamic = [
+    "version",
+]
+
+[project.readme]
+file = "README.md"
+content-type = "text/markdown"
+
+[project.license]
+file = "LICENSE.md"
+content-type = "text/plain"
+
+[project.urls]
+Homepage = "https://github.com/spacetelescope/ci_watson"
+
+[project.entry-points.pytest11]
+pytest_ciwatson = "ci_watson.plugin"
+
+[project.optional-dependencies]
+all = [
+    "astropy",
+]
+test = [
+    "pytest-astropy-header",
+]
+docs = [
+    "numpydoc",
+    "sphinx_rtd_theme>1.2.0",
+    "sphinx-automodapi",
+]
+
 [build-system]
-requires = ["setuptools",
-            "setuptools_scm",
-            "wheel"]
-build-backend = 'setuptools.build_meta'
+requires = [
+    "setuptools",
+    "setuptools_scm",
+    "wheel",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools]
+zip-safe = false
+include-package-data = true
+license-files = [
+    "LICENSE.md",
+]
+
+[tool.setuptools.packages.find]
+exclude = [
+    "tests",
+]
+namespaces = false
+
+[tool.setuptools_scm]
+version_file = "ci_watson/version.py"
+
+[tool.pytest.ini_options]
+minversion = "6"
+testpaths = [
+    "tests",
+]
+norecursedirs = [
+    ".eggs",
+    "build",
+]
+astropy_header = true
+xfail_strict = true
+inputs_root = "ci-watson"
+junit_family = "xunit2"
+filterwarnings = [
+    "error",
+    "ignore:numpy.ndarray size changed:RuntimeWarning",
+]
+addopts = "-p no:legacypath"
 
 [tool.ruff]
 select = [
-  "E9", # syntax / io error
-  "F63", # assertion traps
-  "F7", # keyword outside special block
-  "F82", # undefined variables
-]
\ No newline at end of file
+    "E9",
+    "F63",
+    "F7",
+    "F82",
+]
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 49ae25c..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,62 +0,0 @@
-[metadata]
-name = ci_watson
-description = CI helper for STScI Jenkins
-author = STScI
-author_email = help@stsci.edu
-license = BSD-3-Clause
-license_files = LICENSE.md
-url = https://github.com/spacetelescope/ci_watson
-long_description = file: README.md
-long_description_content_type = text/markdown
-classifier =
-    Framework :: Pytest
-    Intended Audience :: Science/Research
-    License :: OSI Approved :: BSD License
-    Operating System :: OS Independent
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: Implementation :: CPython
-    Topic :: Software Development :: Testing
-    Topic :: Software Development :: Libraries :: Python Modules
-
-[options]
-# We set packages to find: to automatically find all sub-packages
-packages = find:
-include_package_data = True
-zip_safe = False
-setup_requires = setuptools_scm
-install_requires =
-    pytest>=6
-    requests
-    crds
-python_requires = >=3.9
-
-[options.packages.find]
-exclude =
-    tests
-
-[options.extras_require]
-all =
-    astropy
-test =
-    pytest-astropy-header
-docs =
-    numpydoc
-    sphinx_rtd_theme>1.2.0
-    sphinx-automodapi
-
-[options.entry_points]
-pytest11 =
-    pytest_ciwatson = ci_watson.plugin
-
-[tool:pytest]
-minversion = 6
-testpaths = "tests"
-norecursedirs = .eggs build
-astropy_header = true
-xfail_strict = true
-inputs_root = ci-watson
-junit_family = xunit2
-filterwarnings =
-    error
-    ignore:numpy.ndarray size changed:RuntimeWarning
-addopts = "-p no:legacypath"
diff --git a/setup.py b/setup.py
deleted file mode 100755
index e3e260c..0000000
--- a/setup.py
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env python
-
-from setuptools import setup
-
-setup(use_scm_version={'write_to': 'ci_watson/version.py'})