diff --git a/config.py b/config.py
index cce3d3f..46ea8e2 100644
--- a/config.py
+++ b/config.py
@@ -1,5 +1,5 @@
-from configparser import ConfigParser
 import os
+from configparser import ConfigParser
 
 conf = ConfigParser()
 ini_file = os.path.dirname(__file__) + "/fioul.ini"
diff --git a/fioul.py b/fioul.py
index 5a4daf9..f0dafc0 100755
--- a/fioul.py
+++ b/fioul.py
@@ -1,13 +1,14 @@
 #! /usr/bin/env python3
 
+import json
 from argparse import ArgumentParser
-from config import conf
 from datetime import date
-from models import Price, IntegrityError
 
 import requests
-import json
+
 import webapp
+from config import conf
+from models import IntegrityError, Price
 
 
 def get_today_price_from_internet():
diff --git a/models.py b/models.py
index 7ec3801..125e15e 100644
--- a/models.py
+++ b/models.py
@@ -1,10 +1,14 @@
-from config import conf
-from peewee import MySQLDatabase
-from peewee import SqliteDatabase
-from peewee import Model
-from peewee import AutoField, DateField, IntegerField
+from peewee import (
+    AutoField,
+    DateField,
+    IntegerField,
+    IntegrityError,
+    Model,
+    MySQLDatabase,
+    SqliteDatabase,
+)
 
-from peewee import IntegrityError
+from config import conf
 
 backend = conf["db"].get("backend", None)
 if backend == "sqlite":
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..5d7bf33
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,2 @@
+[tool.isort]
+profile = "black"
diff --git a/webapp.py b/webapp.py
index edda04f..3d154bd 100644
--- a/webapp.py
+++ b/webapp.py
@@ -1,8 +1,9 @@
-from bottle import hook, request, route, run, static_file, view
-import models
-from models import Price
 import os
 
+from bottle import hook, request, route, run, static_file, view
+
+import models
+from models import Price
 
 # ----------------------------------------------------------------------
 # Web application