diff --git a/libp2p/stream_muxer/mplex/mplex.py b/libp2p/stream_muxer/mplex/mplex.py
index 00dc25c3..95336d94 100644
--- a/libp2p/stream_muxer/mplex/mplex.py
+++ b/libp2p/stream_muxer/mplex/mplex.py
@@ -1,12 +1,13 @@
 import asyncio
 from typing import Dict, Tuple
 
+from multiaddr import Multiaddr
+
 from libp2p.network.connection.raw_connection_interface import IRawConnection
 from libp2p.network.typing import GenericProtocolHandlerFn
 from libp2p.peer.id import ID
 from libp2p.security.secure_conn_interface import ISecureConn
 from libp2p.stream_muxer.abc import IMuxedConn, IMuxedStream
-from multiaddr import Multiaddr
 
 from .constants import HeaderTags
 from .mplex_stream import MplexStream
diff --git a/tests/libp2p/test_notify.py b/tests/libp2p/test_notify.py
index 31029499..f1262a1f 100644
--- a/tests/libp2p/test_notify.py
+++ b/tests/libp2p/test_notify.py
@@ -18,8 +18,8 @@ from libp2p.network.notifee_interface import INotifee
 from tests.utils import (
     cleanup,
     echo_stream_handler,
-    perform_two_host_set_up_custom_handler,
     generate_new_private_key,
+    perform_two_host_set_up_custom_handler,
 )
 
 
diff --git a/tests/pubsub/factories.py b/tests/pubsub/factories.py
index 2b3aefff..e35839dc 100644
--- a/tests/pubsub/factories.py
+++ b/tests/pubsub/factories.py
@@ -1,4 +1,5 @@
 import factory
+
 from libp2p import initialize_default_swarm
 from libp2p.host.basic_host import BasicHost
 from libp2p.pubsub.floodsub import FloodSub
diff --git a/tests/security/test_security_multistream.py b/tests/security/test_security_multistream.py
index d2e9ea9f..bf4929ba 100644
--- a/tests/security/test_security_multistream.py
+++ b/tests/security/test_security_multistream.py
@@ -1,12 +1,13 @@
 import asyncio
 
+import multiaddr
+import pytest
+
 from libp2p import new_node
 from libp2p.peer.peerinfo import info_from_p2p_addr
 from libp2p.protocol_muxer.multiselect_client import MultiselectClientError
 from libp2p.security.insecure.transport import InsecureSession, InsecureTransport
 from libp2p.security.simple.transport import SimpleSecurityTransport
-import multiaddr
-import pytest
 from tests.utils import cleanup, connect, generate_new_private_key
 
 # TODO: Add tests for multiple streams being opened on different
diff --git a/tests/utils.py b/tests/utils.py
index 6a6336d2..39368694 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,9 +1,8 @@
 import asyncio
 from contextlib import suppress
 
-import multiaddr
-
 from Crypto.PublicKey import RSA
+import multiaddr
 
 from libp2p import new_node
 from libp2p.peer.peerinfo import info_from_p2p_addr