diff --git a/ihatemoney/manage.py b/ihatemoney/manage.py
index d94a1dd4b..67b38b727 100755
--- a/ihatemoney/manage.py
+++ b/ihatemoney/manage.py
@@ -1,10 +1,10 @@
 #!/usr/bin/env python
 
+import datetime
 import getpass
 import os
 import random
 import sys
-import datetime
 
 import click
 from flask.cli import FlaskGroup
diff --git a/ihatemoney/monkeypath_continuum.py b/ihatemoney/monkeypath_continuum.py
index a52c92fad..18e5cb54f 100644
--- a/ihatemoney/monkeypath_continuum.py
+++ b/ihatemoney/monkeypath_continuum.py
@@ -82,12 +82,14 @@ def __repr__(self):
                 )
                 return "<Transaction %s>" % ", ".join(
                     (
-                        "%s=%r" % (field, value)
-                        if not isinstance(value, six.integer_types)
-                        # We want the following line to ensure that longs get
-                        # shown without the ugly L suffix on python 2.x
-                        # versions
-                        else "%s=%d" % (field, value)
+                        (
+                            "%s=%r" % (field, value)
+                            if not isinstance(value, six.integer_types)
+                            # We want the following line to ensure that longs get
+                            # shown without the ugly L suffix on python 2.x
+                            # versions
+                            else "%s=%d" % (field, value)
+                        )
                         for field, value in field_values.items()
                     )
                 )
diff --git a/ihatemoney/tests/budget_test.py b/ihatemoney/tests/budget_test.py
index 732535bc9..9ed01eb80 100644
--- a/ihatemoney/tests/budget_test.py
+++ b/ihatemoney/tests/budget_test.py
@@ -1,5 +1,5 @@
 from collections import defaultdict
-from datetime import datetime, timedelta, date
+from datetime import date, datetime, timedelta
 import re
 from urllib.parse import unquote, urlparse, urlunparse
 
@@ -1032,7 +1032,9 @@ def test_dashboard(self):
         assert """<thead>
         <tr>
             <th>Project</th>
-            <th>Number of participants</th>""" in resp.data.decode("utf-8")
+            <th>Number of participants</th>""" in resp.data.decode(
+            "utf-8"
+        )
 
     def test_dashboard_project_deletion(self):
         self.post_project("raclette")
diff --git a/pyproject.toml b/pyproject.toml
index afe89e894..6b0052b5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "hatchling.build"
 [project]
 name = "ihatemoney"
 version = "6.2.0.dev0"
-requires-python = ">=3.9"
+requires-python = ">=3.9, <3.14"
 description = "A simple shared budget manager web application."
 readme = "README.md"
 license = {file = "LICENSE"}
@@ -20,6 +20,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13", 
     "Topic :: Internet :: WWW/HTTP",
     "Topic :: Internet :: WWW/HTTP :: WSGI :: Application",
 ]
diff --git a/settings.cfg b/settings.cfg
new file mode 100644
index 000000000..1bc03cfd6
--- /dev/null
+++ b/settings.cfg
@@ -0,0 +1,3 @@
+DEBUG = True
+SQLACHEMY_ECHO = DEBUG
+export IHATEMONEY_SETTINGS_FILE_PATH="$(pwd)/settings.cfg"
diff --git a/uv.lock b/uv.lock
index b23e6d6a6..e42c35109 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-requires-python = ">=3.9"
+requires-python = ">=3.9, <3.14"
 
 [[package]]
 name = "alabaster"