diff --git a/api/configs/license/__init__.py b/api/configs/license/__init__.py
index 6678c45dd6..408926fcc3 100644
--- a/api/configs/license/__init__.py
+++ b/api/configs/license/__init__.py
@@ -1,6 +1,8 @@
+from enum import StrEnum
+
 from pydantic import Field
 from pydantic_settings import BaseSettings
-from enum import StrEnum
+
 
 class LicenseStatus(StrEnum):
     NONE = "none"
diff --git a/api/services/feature_service.py b/api/services/feature_service.py
index 347b20b268..26d6c85efd 100644
--- a/api/services/feature_service.py
+++ b/api/services/feature_service.py
@@ -6,6 +6,7 @@ from configs import dify_config
 from services.billing_service import BillingService
 from services.enterprise.enterprise_service import EnterpriseService
 
+
 class SubscriptionModel(BaseModel):
     plan: str = "sandbox"
     interval: str = ""