diff --git a/aiidalab_launch/__main__.py b/aiidalab_launch/__main__.py
index bc8e231..1845da5 100644
--- a/aiidalab_launch/__main__.py
+++ b/aiidalab_launch/__main__.py
@@ -4,6 +4,7 @@
 Authors:
     * Carl Simon Adorf <simon.adorf@epfl.ch>
 """
+
 import asyncio
 import getpass
 import logging
diff --git a/aiidalab_launch/application_state.py b/aiidalab_launch/application_state.py
index c3978bd..0c3dcf0 100644
--- a/aiidalab_launch/application_state.py
+++ b/aiidalab_launch/application_state.py
@@ -4,6 +4,7 @@
 Authors:
     * Carl Simon Adorf <simon.adorf@epfl.ch>
 """
+
 from dataclasses import dataclass, field
 from pathlib import Path
 
diff --git a/setup.py b/setup.py
index 5948248..63e14cb 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,5 @@
 """This file is required for editable installs of the package."""
+
 from setuptools import setup
 
 setup()
diff --git a/tests/conftest.py b/tests/conftest.py
index 226465d..3f3b82f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -6,6 +6,7 @@
 
 Provide fixtures for all tests.
 """
+
 import asyncio
 import random
 import re
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 2ef6f32..b9b0ef8 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -7,6 +7,7 @@
 This is the test module for the project's command-line interface (CLI)
 module.
 """
+
 import logging
 from dataclasses import replace
 
diff --git a/tests/test_instance.py b/tests/test_instance.py
index 18670f0..8e5a3f9 100644
--- a/tests/test_instance.py
+++ b/tests/test_instance.py
@@ -4,6 +4,7 @@
 .. currentmodule:: test_core
 .. moduleauthor:: Carl Simon Adorf <simon.adorf@epfl.ch>
 """
+
 import re
 from copy import deepcopy
 from dataclasses import replace