diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py
index 5871bd9e..e5775c60 100644
--- a/tests/unit/conftest.py
+++ b/tests/unit/conftest.py
@@ -5,7 +5,6 @@
     Read more about conftest.py under:
     https://pytest.org/latest/plugins.html
 """
-
 from collections.abc import Generator
 from pathlib import Path
 from tempfile import NamedTemporaryFile
diff --git a/tests/unit/test_commands.py b/tests/unit/test_commands.py
index acc186a1..16e86673 100644
--- a/tests/unit/test_commands.py
+++ b/tests/unit/test_commands.py
@@ -3,9 +3,8 @@
 from tempfile import NamedTemporaryFile
 
 from aleph.sdk.chains.ethereum import ETHAccount
-from typer.testing import CliRunner
-
 from aleph_client.__main__ import app
+from typer.testing import CliRunner
 
 runner = CliRunner()
 
diff --git a/tests/unit/test_instance.py b/tests/unit/test_instance.py
index f0614138..7183d633 100644
--- a/tests/unit/test_instance.py
+++ b/tests/unit/test_instance.py
@@ -6,12 +6,6 @@
 import pytest
 from aiohttp import InvalidURL
 from aleph.sdk.chains.ethereum import ETHAccount
-from aleph_message.models import Chain
-from aleph_message.models.execution.base import Payment, PaymentType
-from aleph_message.models.execution.environment import CpuProperties
-from eth_utils.currency import to_wei
-from multidict import CIMultiDict, CIMultiDictProxy
-
 from aleph_client.commands.instance import delete
 from aleph_client.commands.instance.network import (
     FORBIDDEN_HOSTS,
@@ -29,6 +23,11 @@
     MemoryUsage,
     UsagePeriod,
 )
+from aleph_message.models import Chain
+from aleph_message.models.execution.base import Payment, PaymentType
+from aleph_message.models.execution.environment import CpuProperties
+from eth_utils.currency import to_wei
+from multidict import CIMultiDict, CIMultiDictProxy
 
 
 def dummy_machine_info() -> MachineInfo:
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index 996a390d..431d8eb3 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -1,3 +1,4 @@
+from aleph_client.utils import get_message_type_value
 from aleph_message.models import (
     AggregateMessage,
     ForgetMessage,
@@ -7,8 +8,6 @@
 )
 from aleph_message.models.base import MessageType
 
-from aleph_client.utils import get_message_type_value
-
 
 def test_get_message_type_value():
     assert get_message_type_value(PostMessage) == MessageType.post