diff --git a/pssecret_server/fernet.py b/pssecret_server/fernet.py
index c90d010..aa63600 100644
--- a/pssecret_server/fernet.py
+++ b/pssecret_server/fernet.py
@@ -1,8 +1,10 @@
-from cryptography.fernet import Fernet
-from pssecret_server.settings import Settings, get_settings
 from typing import Annotated
+
+from cryptography.fernet import Fernet
 from fastapi import Depends
 
+from pssecret_server.settings import Settings, get_settings
+
 
 def get_fernet(settings: Annotated[Settings, Depends(get_settings)]) -> Fernet:
     return Fernet(settings.secrets_encryption_key)
diff --git a/pssecret_server/main.py b/pssecret_server/main.py
index 46c39d8..6c90499 100644
--- a/pssecret_server/main.py
+++ b/pssecret_server/main.py
@@ -26,7 +26,9 @@ FernetDep = Annotated[Fernet, Depends(get_fernet)]
     ),
     response_model=SecretSaveResult,
 )
-async def set_secret(data: Secret, redis: RedisDep, fernet: FernetDep) -> dict[str, str]:
+async def set_secret(
+    data: Secret, redis: RedisDep, fernet: FernetDep
+) -> dict[str, str]:
     data = encrypt_secret(data, fernet)
     return {
         "key": await save_secret(data, redis),
@@ -44,7 +46,9 @@ async def set_secret(data: Secret, redis: RedisDep, fernet: FernetDep) -> dict[s
     response_model=Secret,
     responses={404: {"description": "The item was not found"}},
 )
-async def get_secret(secret_key: str, redis: RedisDep, fernet: FernetDep) -> dict[str, bytes]:
+async def get_secret(
+    secret_key: str, redis: RedisDep, fernet: FernetDep
+) -> dict[str, bytes]:
     data: bytes | None = await redis.getdel(secret_key)
 
     if data is None:
diff --git a/pssecret_server/utils.py b/pssecret_server/utils.py
index 239ff37..e57b710 100644
--- a/pssecret_server/utils.py
+++ b/pssecret_server/utils.py
@@ -1,7 +1,7 @@
 from uuid import uuid4
 
-from redis.asyncio import Redis
 from cryptography.fernet import Fernet
+from redis.asyncio import Redis
 
 from pssecret_server.models import Secret
 
diff --git a/tests/conftest.py b/tests/conftest.py
index b7e212f..88c8915 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,7 +1,7 @@
 from collections.abc import AsyncGenerator
 
-from cryptography.fernet import Fernet
 import pytest
+from cryptography.fernet import Fernet
 from fastapi.testclient import TestClient
 from pydantic_settings import SettingsConfigDict
 from redis import asyncio as aioredis
@@ -31,7 +31,7 @@ def get_test_settings() -> Settings:
     return TestSettings()
 
 
-@pytest.fixture 
+@pytest.fixture
 def fernet(settings: Settings) -> Fernet:
     return get_fernet(settings)
 
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index 35cc82f..de2984b 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -1,13 +1,15 @@
-from cryptography.fernet import Fernet, InvalidToken
 import pytest
-from pssecret_server.utils import encrypt_secret, decrypt_secret
+from cryptography.fernet import Fernet, InvalidToken
+
+from pssecret_server.utils import decrypt_secret, encrypt_secret
+
 from ..factories import SecretFactory
 
 
 def test_encrypte_secret_ok(fernet: Fernet):
     secret = SecretFactory().build()
     encrypted_secret = encrypt_secret(secret, fernet)
-    
+
     assert secret.data != encrypted_secret.data