diff --git a/.flake8 b/.flake8
index ecb802a..9d578eb 100644
--- a/.flake8
+++ b/.flake8
@@ -10,4 +10,4 @@ ignore = D203,W503,W504
 max-complexity = 12
 max-line-length = 120
 per-file-ignores =
-    app/__init__.py : E501
+    tests/utils/app.py : E501
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a8755a7..a015092 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -25,12 +25,12 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install setuptools wheel twine
+        pip install build twine
 
     - name: Build and publish
       env:
         TWINE_USERNAME: __token__
         TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
         twine upload dist/*
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 21a692f..8ea1e27 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,9 @@ jobs:
 
       - name: Get package version
         id: package_version
-        run: echo "python=$(python setup.py --version)" >> $GITHUB_OUTPUT
+        run: |
+          python -m pip install -e .
+          echo "python=$(python -c 'import importlib.metadata; print(importlib.metadata.version("ccs-digitalmarketplace-frontend-jinja"))')" >> $GITHUB_OUTPUT
 
       - name: Check if version tag already exists
         id: version_tag
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 409b30e..1f34e0f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,18 +1,20 @@
-# See https://pre-commit.com for more information
-# See https://pre-commit.com/hooks.html for more hooks
+---
 repos:
--   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: d6d3bd94604578adbd918c5a00d531d98350d86f # v2.3.0
-    hooks:
-    -   id: detect-private-key
--   repo: https://github.com/Yelp/detect-secrets
-    rev: a3e7998bfa4924b13df3f9cb49070abdbdff8802 # v0.13.1
-    hooks:
-    -   id: detect-secrets
-        args: ['--baseline', '.secrets.baseline']
-        exclude: .*/keys/.*|
-              (?x)(
-                     ^package-lock.json$/|
-                     ^Pipfile/|
-                     ^pyproject.toml
-              )
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v5.0.0
+  hooks:
+    - id: trailing-whitespace
+    - id: end-of-file-fixer
+    - id: check-yaml
+    - id: check-added-large-files
+    - id: detect-private-key
+
+- repo: https://github.com/abravalheri/validate-pyproject
+  rev: v0.22
+  hooks:
+    - id: validate-pyproject
+
+- repo: https://github.com/PyCQA/flake8
+  rev: 7.0.0
+  hooks:
+    - id: flake8
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10b1d2f..78a5006 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ Records breaking changes from major version bumps.
 
 ## Unreleased
 
+Replace `setup.py` with `pyproject.toml`
+
 ## 2.10.0
 
 Upgrade Digital Marketplace Frontend to v1.3.1
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..1eeef06
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+prune tests
diff --git a/README.md b/README.md
index 3eaa980..9b2b739 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,11 @@ To make a new version:
 
 When the pull request is merged a GitHub Action will tag the new version.
 
+## Pre-commit hooks
+
+This project has a [pre-commit hook][pre-commit hook] to do some general file checks and check the `pyproject.toml`.
+Follow the [Quick start][pre-commit quick start] to see how to set this up in your local checkout of this project.
+
 ## Licence
 
 Unless stated otherwise, the codebase is released under [the MIT License][mit].
@@ -105,3 +110,6 @@ of the [Open Government 3.0][ogl] licence.
 [mit]: LICENCE
 [copyright]: http://www.nationalarchives.gov.uk/information-management/re-using-public-sector-information/uk-government-licensing-framework/crown-copyright/
 [ogl]: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/
+
+[pre-commit hook]: https://pre-commit.com/
+[pre-commit quick start]: https://pre-commit.com/#quick-start
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..9bc2ab2
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,34 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ccs-digitalmarketplace-frontend-jinja"
+dynamic = ["version"]
+dependencies = [
+  'jinja2>3',
+  'ccs-govuk-frontend-jinja>=1.4,<2',
+  'ccs-digitalmarketplace-utils>=68.0.0',
+]
+requires-python = ">=3.10,<3.13"
+authors = [
+  {name = "CCS Developers"},
+]
+description = "Jinja templates for Digital Marketplace apps."
+readme = "README.md"
+license = {file = "LICENSE"}
+
+[project.urls]
+Homepage = "https://github.com/Crown-Commercial-Service/ccs-digitalmarketplace-frontend-jinja"
+Repository = "https://github.com/Crown-Commercial-Service/ccs-digitalmarketplace-frontend-jinja.git"
+Issues = "https://github.com/Crown-Commercial-Service/ccs-digitalmarketplace-frontend-jinja/issues"
+Changelog = "https://github.com/Crown-Commercial-Service/ccs-digitalmarketplace-frontend-jinja/CHANGELOG.md"
+
+[tool.setuptools.dynamic]
+version = {attr = "digitalmarketplace_frontend_jinja.__version__"}
+
+[tool.setuptools.packages.find]
+exclude = ["node_modules*"]
+
+[tool.setuptools.package-data]
+digitalmarketplace_frontend_jinja = ["**/*.html"]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8ceebf7..b65a336 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -18,11 +18,11 @@ botocore==1.34.142
     #   s3transfer
 cachelib==0.13.0
     # via flask-session
-ccs-digitalmarketplace-apiclient==25.11.0
+ccs-digitalmarketplace-apiclient==27.3.0
     # via ccs-digitalmarketplace-utils
-ccs-digitalmarketplace-utils==68.0.0
+ccs-digitalmarketplace-utils==68.1.0
     # via ccs-digitalmarketplace-frontend-jinja
-ccs-govuk-frontend-jinja==1.3.0
+ccs-govuk-frontend-jinja==1.4.0
     # via ccs-digitalmarketplace-frontend-jinja
 certifi==2024.7.4
     # via requests
@@ -47,6 +47,7 @@ flake8==7.1.1
 flask==3.0.3
     # via
     #   -r requirements-dev.in
+    #   ccs-digitalmarketplace-apiclient
     #   ccs-digitalmarketplace-utils
     #   flask-gzip
     #   flask-login
diff --git a/setup.py b/setup.py
deleted file mode 100644
index eaa9f6d..0000000
--- a/setup.py
+++ /dev/null
@@ -1,38 +0,0 @@
-"""
-Jinja templates for Digital Marketplace apps.
-"""
-import re
-import ast
-import glob
-import os
-from setuptools import setup, find_packages
-
-
-_version_re = re.compile(r'__version__\s+=\s+(.*)')
-
-with open('digitalmarketplace_frontend_jinja/__init__.py', 'rb') as f:
-    version = str(ast.literal_eval(_version_re.search(f.read().decode('utf-8')).group(1)))
-
-components = []
-directories = glob.glob("digitalmarketplace_frontend_jinja/**/**/*.html", recursive=True)
-for directory in directories:
-    components.append(os.path.relpath(os.path.dirname(directory), "digitalmarketplace_frontend_jinja") + "/*.html")
-
-setup(
-    name='ccs-digitalmarketplace-frontend-jinja',
-    version=version,
-    url='https://github.com/tim-s-ccs/ccs-digitalmarketplace-frontend-jinja',
-    license='MIT',
-    author='CCS',
-    description='Jinja templates for Digital Marketplace apps.',
-    long_description=__doc__,
-    packages=find_packages(),
-    package_data={'digitalmarketplace_frontend_jinja': components},
-    include_package_data=True,
-    install_requires=[
-        'jinja2>3',
-        'ccs-govuk-frontend-jinja>=1.2,<2',
-        'ccs-digitalmarketplace-utils>=67.0.0',
-    ],
-    python_requires=">=3.10,<3.13",
-)
diff --git a/tasks.py b/tasks.py
index 5a7fa21..144016c 100644
--- a/tasks.py
+++ b/tasks.py
@@ -6,7 +6,7 @@
 
 @task(ns["virtualenv"], ns["requirements_dev"])
 def test_mypy(c):
-    c.run("mypy app/")
+    c.run("mypy tests/utils/")
 
 
 ns.add_task(npm_install)
diff --git a/tests/conftest.py b/tests/conftest.py
index a0f5baf..15e8986 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,6 +1,6 @@
 import pytest
 
-from app import create_app
+from utils.app import create_app
 
 
 @pytest.fixture
diff --git a/tests/utils/__init__.py b/tests/utils/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/__init__.py b/tests/utils/app.py
similarity index 97%
rename from app/__init__.py
rename to tests/utils/app.py
index 771add3..76602f1 100644
--- a/app/__init__.py
+++ b/tests/utils/app.py
@@ -28,7 +28,7 @@ def create_app():
                     "digitalmarketplace_frontend_jinja": FileSystemLoader(
                         searchpath=os.path.join(
                             os.path.dirname(__file__),
-                            "../digitalmarketplace_frontend_jinja/templates"
+                            "../../digitalmarketplace_frontend_jinja/templates"
                         )
                     )
                 }
diff --git a/app/templates/_base_page.html b/tests/utils/templates/_base_page.html
similarity index 100%
rename from app/templates/_base_page.html
rename to tests/utils/templates/_base_page.html