diff --git a/src/adn_server/application/proxy/use_cases.py b/src/adn_server/application/proxy/use_cases.py
index ada6aaf..fe869b5 100644
--- a/src/adn_server/application/proxy/use_cases.py
+++ b/src/adn_server/application/proxy/use_cases.py
@@ -27,7 +27,7 @@ from collections.abc import Sequence
 
 from adn_server.application.ports import PendingRptoQueue, ProxyIpBlacklist, ProxySlotStore
 from adn_server.domain.errors import DomainError
-from adn_server.domain.proxy import ClientEndpoint, ClientSlot, PendingRpto, SessionTeardown
+from adn_server.domain.proxy import ClientEndpoint, ClientSlot, SessionTeardown
 from adn_server.domain.result import Fail, Result, Success
 from adn_server.domain.value_objects import int_id
 
diff --git a/tests/application/test_peer_single_downlink.py b/tests/application/test_peer_single_downlink.py
index 5c6686e..654e591 100644
--- a/tests/application/test_peer_single_downlink.py
+++ b/tests/application/test_peer_single_downlink.py
@@ -25,7 +25,6 @@ from __future__ import annotations
 from adn_server.application.routing.helpers import (
     clear_peer_rx_status_slots,
     clear_peer_ua_sessions,
-    peer_hotspot_voice_slot_busy,
     peer_options_static_tg_slot,
     peer_receives_group_tgid,
     peer_should_receive_group_voice,
diff --git a/tests/application/test_proxy_use_cases.py b/tests/application/test_proxy_use_cases.py
index 37fe8d0..8d8e6eb 100644
--- a/tests/application/test_proxy_use_cases.py
+++ b/tests/application/test_proxy_use_cases.py
@@ -28,8 +28,7 @@ import pytest
 
 from adn_server.application.proxy import ProxyUseCases, peer_id_from_packet
 from adn_server.domain.proxy import ClientEndpoint
-from adn_server.domain.result import is_fail
-from adn_server.domain.result import Success
+from adn_server.domain.result import Success, is_fail
 from adn_server.domain.value_objects import bytes_4
 from adn_server.infrastructure.proxy import InMemoryPendingRptoQueue, InMemoryProxySlotStore
 
diff --git a/tests/application/test_routing_table_legacy_view.py b/tests/application/test_routing_table_legacy_view.py
index 608430a..41b7fe4 100644
--- a/tests/application/test_routing_table_legacy_view.py
+++ b/tests/application/test_routing_table_legacy_view.py
@@ -24,7 +24,6 @@ from __future__ import annotations
 
 from adn_server.application.subscription.routing_table_export import export_routing_table
 from adn_server.application.subscription.routing_table_legacy_view import RoutingTableLegacyView
-from adn_server.domain import bytes_3
 from adn_server.domain.subscription import (
     ActivationPolicy,
     AudioChannel,
diff --git a/tests/application/test_subscription_table_store_ops.py b/tests/application/test_subscription_table_store_ops.py
index 9924654..058604e 100644
--- a/tests/application/test_subscription_table_store_ops.py
+++ b/tests/application/test_subscription_table_store_ops.py
@@ -116,6 +116,7 @@ def test_master_dynamic_tg_slots_expired_single() -> None:
 def test_apply_static_tg_to_bridge_activates_dynamic_tg() -> None:
     """A dynamic TG not in OPTIONS is activated when a peer has an active UA session for it."""
     from tests.harness.deterministic import DeterministicScenario, add_openbridge_system
+
     from adn_server.domain import bytes_4
 
     config = minimal_config(("MASTER-A",))
diff --git a/tests/infrastructure/mesh/test_obp_v1.py b/tests/infrastructure/mesh/test_obp_v1.py
index e05e5df..7af4318 100644
--- a/tests/infrastructure/mesh/test_obp_v1.py
+++ b/tests/infrastructure/mesh/test_obp_v1.py
@@ -24,13 +24,13 @@ from __future__ import annotations
 
 from adn_server.domain import bytes_4
 from adn_server.infrastructure.hbp_constants import BCKA, BCSQ, BCST, BCVE, DMRD
-from adn_server.infrastructure.mesh.obp_v1 import obp_hmac_sha1
 from adn_server.infrastructure.mesh.obp_v1 import (
     DMRD_V1_WIRE_LEN,
     build_bcka,
     build_bcsq,
     build_bcve,
     build_dmrd_v1,
+    obp_hmac_sha1,
     verify_bcka,
     verify_bcsq,
     verify_bcst,