diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1324a4d..17353b5 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,22 +8,22 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.9'
-        architecture: 'x64'
+        python-version: "3.x"
 
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install setuptools wheel twine
+        pip install build twine
 
     - name: Build source and binary distribution package
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
       env:
         PACKAGE_VERSION: ${{ github.ref }}
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3884162..85aed16 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
             django-version: '5.1'
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
@@ -34,7 +34,7 @@ jobs:
       - name: Install dependencies and package
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pip install -e ".[dev]"
           pip install django~=${{ matrix.django-version }}.0
 
       - name: Run lint and code review
@@ -42,15 +42,8 @@ jobs:
           pre-commit run --all-files
       - name: Run tests with coverage
         run: |
-          # prepare Django project: link all necessary data from the test project into the root directory
-          # Hint: Simply changing the directory does not work (leads to missing files in coverage report)
-          ln -s ./tests/core core
-          ln -s ./tests/testapp testapp
-          ln -s ./tests/manage.py manage.py
           # run tests with coverage
-          coverage run \
-            --source='./django_future_tasks' \
-            manage.py test
+          pytest --cov=django_future_tasks tests
           coverage xml
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
diff --git a/.gitignore b/.gitignore
index 7b46ce0..89a5a55 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,6 @@ __pycache__
 db.sqlite3
 build/*
 tests/static/*
+.python-version
+.coverage
+uv.lock
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4ce655d..da05865 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,8 +20,8 @@ repos:
       - id: add-trailing-comma
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.6.9
+    rev: v0.12.8
     hooks:
-      - id: ruff
+      - id: ruff-check
         args: [ --fix ]
       - id: ruff-format
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae73a6c..f0baf31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.3.2]
+
+### Changed
+
+- Migrate to `pytest`.
+- Migrate to `pyproject.toml`.
+
+## [1.3.1]
+
+### Fixed
+
+- Fix infinite loop in populate_periodic_future_tasks on IntegrityError
+
 ## [1.3.0]
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..0935a47
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,54 @@
+[project]
+name = "django-future-tasks"
+description = "A library to create periodic, cron-like tasks or single tasks with a specified execution/start time and schedule it to run in the future."
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "Armin Ster", email = "aster@anexia-it.com"},
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Framework :: Django",
+    "Framework :: Django :: 4.2",
+    "Framework :: Django :: 5.0",
+    "Framework :: Django :: 5.1",
+    "Intended Audience :: Developers",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+]
+dynamic = ["version"]
+dependencies = [
+    "croniter>=3.0.3,<3.1",
+    "django-cronfield>=0.2.0,<0.3",
+]
+
+[project.optional-dependencies]
+dev = [
+    "django>=4.2,<5.2",
+    "pre-commit>=4.3,<4.4",
+    "pytest>=8.4,<8.5",
+    "pytest-cov>=7.0,<7.1",
+    "pytest-django>=4.11,<4.12",
+    "time-machine>=2.15.0,<2.17.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/anexia/django-future-tasks"
+Documentation = "https://github.com/anexia/django-future-tasks/blob/main/README.md"
+Repository = "https://github.com/anexia/django-future-tasks"
+Issues = "https://github.com/anexia/django-future-tasks/issues"
+Changelog = "https://github.com/anexia/django-future-tasks/blob/main/CHANGELOG.md"
+
+[tool.pytest.ini_options]
+DJANGO_SETTINGS_MODULE = "core.settings"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 927d84f..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-# Package and package dependencies
--e .
-
-# Development dependencies
-coverage>=7.6.2,<7.7
-
-# Cron
-croniter>=3.0.3,<3.1
-
-# TestApp dependencies
-django>=4.2,<5.2
-django-cronfield>=0.2.0,<0.3
-
-# Linters and formatters
-pre-commit>=4.0.1,<4.1
-time-machine>=2.15.0,<2.17.0
diff --git a/setup.py b/setup.py
index fbadce3..12053cd 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name="django-future-tasks",
-    version=os.getenv("PACKAGE_VERSION", "1.3.0").replace("refs/tags/", ""),
+    version=os.getenv("PACKAGE_VERSION", "1.3.2").replace("refs/tags/", ""),
     packages=find_packages(),
     include_package_data=True,
     install_requires=[
diff --git a/tests/testapp/apps.py b/tests/testapp/apps.py
index 24105e1..7e9b7dd 100644
--- a/tests/testapp/apps.py
+++ b/tests/testapp/apps.py
@@ -5,4 +5,4 @@ class TestappConfig(AppConfig):
     name = "testapp"
 
     # import signal handlers
-    import tests.testapp.handlers
+    import testapp.handlers
diff --git a/tests/testapp/handlers.py b/tests/testapp/handlers.py
index 926bca6..11b91c2 100644
--- a/tests/testapp/handlers.py
+++ b/tests/testapp/handlers.py
@@ -5,7 +5,7 @@
 from django.dispatch import receiver
 
 from django_future_tasks.handlers import future_task_signal
-from tests.core import settings
+from core import settings
 
 
 @receiver(future_task_signal, sender=intern(settings.FUTURE_TASK_TYPE_ONE))
diff --git a/tests/testapp/mixins.py b/tests/testapp/mixins.py
index 2f3ed51..68cd35a 100644
--- a/tests/testapp/mixins.py
+++ b/tests/testapp/mixins.py
@@ -20,9 +20,9 @@ def run(self):
 class ProcessTasksCommandMixin:
     @classmethod
     def setUpClass(cls):
-        assert (
-            not hasattr(cls, "command_instance") or cls.command_instance is None
-        ), "process_future_tasks has already been started"
+        assert not hasattr(cls, "command_instance") or cls.command_instance is None, (
+            "process_future_tasks has already been started"
+        )
         print("Starting process_future_tasks...")
 
         cls.command_instance = ProcessTasksCommand()
@@ -32,9 +32,9 @@ def setUpClass(cls):
 
     @classmethod
     def tearDownClass(cls):
-        assert (
-            cls.command_instance is not None
-        ), "process_future_tasks has not been started and can therefore not be stopped"
+        assert cls.command_instance is not None, (
+            "process_future_tasks has not been started and can therefore not be stopped"
+        )
         print("Stopping process_future_tasks...")
 
         super().tearDownClass()
@@ -45,9 +45,9 @@ def tearDownClass(cls):
 class PopulatePeriodicTaskCommandMixin:
     @classmethod
     def setUpClass(cls):
-        assert (
-            not hasattr(cls, "command_instance") or cls.command_instance is None
-        ), "populate_periodic_future_tasks has already been started"
+        assert not hasattr(cls, "command_instance") or cls.command_instance is None, (
+            "populate_periodic_future_tasks has already been started"
+        )
         print("Starting populate_periodic_future_tasks...")
 
         cls.command_instance = PopulatePeriodicTasksCommand()
@@ -57,9 +57,9 @@ def setUpClass(cls):
 
     @classmethod
     def tearDownClass(cls):
-        assert (
-            cls.command_instance is not None
-        ), "populate_periodic_future_tasks has not been started and can therefore not be stopped"
+        assert cls.command_instance is not None, (
+            "populate_periodic_future_tasks has not been started and can therefore not be stopped"
+        )
         print("Stopping populate_periodic_future_tasks...")
 
         super().tearDownClass()
diff --git a/tests/testapp/tests/test_future_tasks.py b/tests/testapp/tests/test_future_tasks.py
index 78b3039..2a025e0 100644
--- a/tests/testapp/tests/test_future_tasks.py
+++ b/tests/testapp/tests/test_future_tasks.py
@@ -10,8 +10,8 @@
 from django.utils import timezone
 
 from django_future_tasks.models import FutureTask
-from tests.core import settings
-from tests.testapp.mixins import ProcessTasksCommandMixin
+from core import settings
+from testapp.mixins import ProcessTasksCommandMixin
 
 
 class WaitForTaskStatusTimeout(Exception):
diff --git a/tests/testapp/tests/test_periodic_future_tasks.py b/tests/testapp/tests/test_periodic_future_tasks.py
index f2e7d51..b09ee5b 100644
--- a/tests/testapp/tests/test_periodic_future_tasks.py
+++ b/tests/testapp/tests/test_periodic_future_tasks.py
@@ -7,8 +7,8 @@
 from django.utils import timezone
 
 from django_future_tasks.models import FutureTask, PeriodicFutureTask
-from tests.core import settings
-from tests.testapp.mixins import PopulatePeriodicTaskCommandMixin
+from core import settings
+from testapp.mixins import PopulatePeriodicTaskCommandMixin
 
 SLEEP_TIME = 1.8