diff --git a/api/services/app_generate_service.py b/api/services/app_generate_service.py
index 17ed98d301..5e8c7aa337 100644
--- a/api/services/app_generate_service.py
+++ b/api/services/app_generate_service.py
@@ -4,7 +4,7 @@ import logging
 import threading
 import uuid
 from collections.abc import Callable, Generator, Mapping
-from typing import TYPE_CHECKING, Any, Union
+from typing import TYPE_CHECKING, Any
 
 from configs import dify_config
 from core.app.apps.advanced_chat.app_generator import AdvancedChatAppGenerator
@@ -88,7 +88,7 @@ class AppGenerateService:
     def generate(
         cls,
         app_model: App,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         args: Mapping[str, Any],
         invoke_from: InvokeFrom,
         streaming: bool = True,
@@ -356,11 +356,11 @@ class AppGenerateService:
     def generate_more_like_this(
         cls,
         app_model: App,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         message_id: str,
         invoke_from: InvokeFrom,
         streaming: bool = True,
-    ) -> Union[Mapping, Generator]:
+    ) -> Mapping | Generator:
         """
         Generate more like this
         :param app_model: app model
diff --git a/api/services/file_service.py b/api/services/file_service.py
index 7443ca3271..79a935de4b 100644
--- a/api/services/file_service.py
+++ b/api/services/file_service.py
@@ -5,7 +5,7 @@ import uuid
 from collections.abc import Iterator, Sequence
 from contextlib import contextmanager, suppress
 from tempfile import NamedTemporaryFile
-from typing import Literal, Union
+from typing import Literal
 from zipfile import ZIP_DEFLATED, ZipFile
 
 from graphon.file import helpers as file_helpers
@@ -52,7 +52,7 @@ class FileService:
         filename: str,
         content: bytes,
         mimetype: str,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         source: Literal["datasets"] | None = None,
         source_url: str = "",
     ) -> UploadFile:
diff --git a/api/services/rag_pipeline/pipeline_generate_service.py b/api/services/rag_pipeline/pipeline_generate_service.py
index 10e89b1dba..56bc785958 100644
--- a/api/services/rag_pipeline/pipeline_generate_service.py
+++ b/api/services/rag_pipeline/pipeline_generate_service.py
@@ -1,5 +1,5 @@
 from collections.abc import Mapping
-from typing import Any, Union
+from typing import Any
 
 from configs import dify_config
 from core.app.apps.pipeline.pipeline_generator import PipelineGenerator
@@ -17,7 +17,7 @@ class PipelineGenerateService:
     def generate(
         cls,
         pipeline: Pipeline,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         args: Mapping[str, Any],
         invoke_from: InvokeFrom,
         streaming: bool = True,