diff --git a/wgkex/common/utils.py b/wgkex/common/utils.py
index 8fa201c..e90ee43 100644
--- a/wgkex/common/utils.py
+++ b/wgkex/common/utils.py
@@ -1,4 +1,5 @@
 """A collection of general utilities."""
+
 import ipaddress
 import re
 
diff --git a/wgkex/config/config.py b/wgkex/config/config.py
index b0239e2..b597f5a 100644
--- a/wgkex/config/config.py
+++ b/wgkex/config/config.py
@@ -1,4 +1,5 @@
 """Configuration handling class."""
+
 import dataclasses
 import logging
 import os
diff --git a/wgkex/config/config_test.py b/wgkex/config/config_test.py
index 6e30eb3..8c3be35 100644
--- a/wgkex/config/config_test.py
+++ b/wgkex/config/config_test.py
@@ -1,4 +1,5 @@
 """Tests for configuration handling class."""
+
 import unittest
 import mock
 import yaml
diff --git a/wgkex/worker/app_test.py b/wgkex/worker/app_test.py
index efe774d..8cb418f 100644
--- a/wgkex/worker/app_test.py
+++ b/wgkex/worker/app_test.py
@@ -1,4 +1,5 @@
 """Unit tests for app.py"""
+
 import threading
 from time import sleep
 import unittest
diff --git a/wgkex/worker/mqtt_test.py b/wgkex/worker/mqtt_test.py
index 3ea186e..efdd4eb 100644
--- a/wgkex/worker/mqtt_test.py
+++ b/wgkex/worker/mqtt_test.py
@@ -1,4 +1,5 @@
 """Unit tests for mqtt.py"""
+
 import socket
 import threading
 import unittest
diff --git a/wgkex/worker/netlink.py b/wgkex/worker/netlink.py
index bb413f1..057e110 100644
--- a/wgkex/worker/netlink.py
+++ b/wgkex/worker/netlink.py
@@ -1,4 +1,5 @@
 """Functions related to netlink manipulation for Wireguard, IPRoute and FDB on Linux."""
+
 # See https://docs.pyroute2.org/iproute.html for a documentation of the layout of netlink responses
 import hashlib
 import re
diff --git a/wgkex/worker/netlink_test.py b/wgkex/worker/netlink_test.py
index 0874005..86673a7 100644
--- a/wgkex/worker/netlink_test.py
+++ b/wgkex/worker/netlink_test.py
@@ -1,4 +1,5 @@
 """Unit tests for netlink.py"""
+
 import unittest
 import mock
 from datetime import timedelta