diff --git a/src/pia/__init__.py b/src/pia/__init__.py
index df1f4e4..4f096f1 100644
--- a/src/pia/__init__.py
+++ b/src/pia/__init__.py
@@ -1,4 +1,5 @@
 """PIA - Package Installer for Ansible."""
+
 try:
     from pia._version import version as __version__
 except ImportError:  # pragma: no branch
diff --git a/src/pia/__main__.py b/src/pia/__main__.py
index d8f7340..79857cc 100644
--- a/src/pia/__main__.py
+++ b/src/pia/__main__.py
@@ -1,4 +1,5 @@
 """PIA command line."""
+
 from __future__ import annotations
 
 import argparse
diff --git a/src/pia/proc.py b/src/pia/proc.py
index 115cdfb..0b47434 100644
--- a/src/pia/proc.py
+++ b/src/pia/proc.py
@@ -1,4 +1,5 @@
 """Module to work with processes."""
+
 from __future__ import annotations
 
 import json
diff --git a/test/test_cli.py b/test/test_cli.py
index 5f3e278..35da120 100644
--- a/test/test_cli.py
+++ b/test/test_cli.py
@@ -1,4 +1,5 @@
 """Tests for PIA."""
+
 import pytest
 
 from pia.__main__ import main