diff --git a/tests/factories.py b/tests/factories.py
index 5c08d4df..b4e8be23 100644
--- a/tests/factories.py
+++ b/tests/factories.py
@@ -2,6 +2,7 @@ import asyncio
 from typing import Dict, Tuple
 
 import factory
+
 from libp2p import generate_new_rsa_identity, initialize_default_swarm
 from libp2p.crypto.keys import KeyPair
 from libp2p.host.basic_host import BasicHost