diff --git a/harvester/db/models/__init__.py b/harvester/db/models/__init__.py
index 800b9271..2c542b76 100644
--- a/harvester/db/models/__init__.py
+++ b/harvester/db/models/__init__.py
@@ -1,6 +1,6 @@
 from sqlalchemy import text
-from sqlalchemy.orm import DeclarativeBase, mapped_column
 from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import DeclarativeBase, mapped_column
 
 
 class Base(DeclarativeBase):
diff --git a/harvester/db/models/models.py b/harvester/db/models/models.py
index dec12407..bce7ccc7 100644
--- a/harvester/db/models/models.py
+++ b/harvester/db/models/models.py
@@ -1,16 +1,14 @@
+import enum
 import os
 
 import dotenv
-
-from harvester.db.models import Base
-
-from sqlalchemy import ForeignKey, SMALLINT, create_engine
-from sqlalchemy import String, DateTime, Enum
-from sqlalchemy.dialects.postgresql import JSON, UUID, ARRAY
+from sqlalchemy import (SMALLINT, DateTime, Enum, ForeignKey, String,
+                        create_engine)
+from sqlalchemy.dialects.postgresql import ARRAY, JSON, UUID
 from sqlalchemy.orm import mapped_column, sessionmaker
 from sqlalchemy.sql import func
 
-import enum
+from harvester.db.models import Base
 
 dotenv.load_dotenv()
 
diff --git a/tests/db/sqlalchemy/conftest.py b/tests/db/sqlalchemy/conftest.py
index 45814231..49d3af70 100644
--- a/tests/db/sqlalchemy/conftest.py
+++ b/tests/db/sqlalchemy/conftest.py
@@ -1,19 +1,24 @@
-import pytest 
+import pytest
 
-@pytest.fixture 
+
+@pytest.fixture
 def create_test_harvest_source():
     return {
         "id": "7b295ba9-137e-4d0d-8295-3abac2849a0e",
         "name": "test_harvest_source",
-        "notification_emails": [ "something@example.com", "another@test.com" ],
+        "notification_emails": ["something@example.com", "another@test.com"],
         "organization_name": "example",
         "frequency": "weekly",
-        "config": { "test": 1, "example": True, "something": [ "a", "b" ] },
-        "urls": [ "https://path_to_resource/example.json", "https://path_to_resource/another_example.json"],
-        "schema_validation_type": "dcatus"
+        "config": {"test": 1, "example": True, "something": ["a", "b"]},
+        "urls": [
+            "https://path_to_resource/example.json",
+            "https://path_to_resource/another_example.json",
+        ],
+        "schema_validation_type": "dcatus",
     }
 
-@pytest.fixture 
+
+@pytest.fixture
 def create_test_harvest_job():
     return {
         "id": "c8837a2f-bd0b-4333-82f5-0b64f126da34",
@@ -21,20 +26,22 @@ def create_test_harvest_job():
         "status": "INACTIVE",
     }
 
-@pytest.fixture 
+
+@pytest.fixture
 def create_test_harvest_record():
     return {
         "job_id": "c8837a2f-bd0b-4333-82f5-0b64f126da34",
         "source_id": "7b295ba9-137e-4d0d-8295-3abac2849a0e",
         "status": "ACTIVE",
-        "s3_path": "https://bucket-name.s3.region-code.amazonaws.com/key-name"
+        "s3_path": "https://bucket-name.s3.region-code.amazonaws.com/key-name",
     }
 
+
 @pytest.fixture
 def create_test_harvest_error():
     return {
         "job_id": "c8837a2f-bd0b-4333-82f5-0b64f126da34",
         "record_id": "b5195975-03db-4cf8-b373-52035f0f428f",
         "record_reported_id": "example",
-        "severity": "CRITICAL"
-    }
\ No newline at end of file
+        "severity": "CRITICAL",
+    }
diff --git a/tests/db/sqlalchemy/test_sqlalchemy.py b/tests/db/sqlalchemy/test_sqlalchemy.py
index f79d495c..22442328 100644
--- a/tests/db/sqlalchemy/test_sqlalchemy.py
+++ b/tests/db/sqlalchemy/test_sqlalchemy.py
@@ -1,16 +1,11 @@
-from harvester.db.models import Base
-from harvester.db.models.models import (
-    create_sqlalchemy_engine,
-    create_sqlalchemy_session,
-)
-from harvester.db.models.models import (
-    HarvestSource,
-    HarvestJob,
-    HarvestRecord,
-    HarvestError,
-)
 from sqlalchemy.orm import close_all_sessions
 
+from harvester.db.models import Base
+from harvester.db.models.models import (HarvestError, HarvestJob,
+                                        HarvestRecord, HarvestSource,
+                                        create_sqlalchemy_engine,
+                                        create_sqlalchemy_session)
+
 
 def test_add_tables():
     engine = create_sqlalchemy_engine()