diff --git a/api/controllers/console/app/workflow.py b/api/controllers/console/app/workflow.py
index 47359f902e..aa5eb93489 100644
--- a/api/controllers/console/app/workflow.py
+++ b/api/controllers/console/app/workflow.py
@@ -6,7 +6,8 @@ from typing import Any
 from flask import abort, request
 from flask_restx import Resource, fields, marshal_with
 from graphon.enums import NodeType
-from graphon.file import File, helpers as file_helpers
+from graphon.file import File
+from graphon.file import helpers as file_helpers
 from graphon.graph_engine.manager import GraphEngineManager
 from graphon.model_runtime.utils.encoders import jsonable_encoder
 from pydantic import BaseModel, Field, ValidationError, field_validator
diff --git a/api/tests/unit_tests/controllers/console/app/test_workflow.py b/api/tests/unit_tests/controllers/console/app/test_workflow.py
index 3bfda0d1a8..f330018d40 100644
--- a/api/tests/unit_tests/controllers/console/app/test_workflow.py
+++ b/api/tests/unit_tests/controllers/console/app/test_workflow.py
@@ -293,9 +293,7 @@ def test_advanced_chat_run_conversation_not_exists(app, monkeypatch: pytest.Monk
             handler(api, app_model=SimpleNamespace(id="app"))
 
 
-def test_workflow_online_users_filters_inaccessible_workflow(
-    app, monkeypatch: pytest.MonkeyPatch
-) -> None:
+def test_workflow_online_users_filters_inaccessible_workflow(app, monkeypatch: pytest.MonkeyPatch) -> None:
     app_id_1 = "11111111-1111-1111-1111-111111111111"
     app_id_2 = "22222222-2222-2222-2222-222222222222"
     signed_avatar_url = "https://files.example.com/signed/avatar-1"
@@ -353,9 +351,7 @@ def test_workflow_online_users_filters_inaccessible_workflow(
     sign_avatar.assert_called_once_with("avatar-file-id")
 
 
-def test_workflow_online_users_rejects_excessive_workflow_ids(
-    app, monkeypatch: pytest.MonkeyPatch
-) -> None:
+def test_workflow_online_users_rejects_excessive_workflow_ids(app, monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr(workflow_module, "current_account_with_tenant", lambda: (SimpleNamespace(), "tenant-1"))
     accessible_app_ids = Mock(return_value=set())
     monkeypatch.setattr(
@@ -364,9 +360,7 @@ def test_workflow_online_users_rejects_excessive_workflow_ids(
         lambda: SimpleNamespace(get_accessible_app_ids=accessible_app_ids),
     )
 
-    excessive_ids = ",".join(
-        f"wf-{index}" for index in range(workflow_module.MAX_WORKFLOW_ONLINE_USERS_QUERY_IDS + 1)
-    )
+    excessive_ids = ",".join(f"wf-{index}" for index in range(workflow_module.MAX_WORKFLOW_ONLINE_USERS_QUERY_IDS + 1))
 
     api = workflow_module.WorkflowOnlineUsersApi()
     handler = _unwrap(api.get)
diff --git a/api/tests/unit_tests/controllers/console/app/test_workflow_comment_api.py b/api/tests/unit_tests/controllers/console/app/test_workflow_comment_api.py
index 0c1a9b38a4..85afcf0e60 100644
--- a/api/tests/unit_tests/controllers/console/app/test_workflow_comment_api.py
+++ b/api/tests/unit_tests/controllers/console/app/test_workflow_comment_api.py
@@ -129,9 +129,7 @@ class WriteCase:
         ),
     ],
 )
-def test_write_endpoints_require_edit_permission(
-    app: Flask, monkeypatch: pytest.MonkeyPatch, case: WriteCase
-) -> None:
+def test_write_endpoints_require_edit_permission(app: Flask, monkeypatch: pytest.MonkeyPatch, case: WriteCase) -> None:
     app.config.setdefault("RESTX_MASK_HEADER", "X-Fields")
     account = _make_account(TenantAccountRole.NORMAL)
     app_model = _make_app()