diff --git a/tox_pdm/plugin.py b/tox_pdm/plugin.py
index 1db665d..09b09b2 100644
--- a/tox_pdm/plugin.py
+++ b/tox_pdm/plugin.py
@@ -1,4 +1,5 @@
 """Plugin specification for Tox 4"""
+
 from __future__ import annotations
 
 import os