diff --git a/api/.ruff.toml b/api/.ruff.toml
index 22b99999d24..d15d960714c 100644
--- a/api/.ruff.toml
+++ b/api/.ruff.toml
@@ -60,7 +60,6 @@ select = [
 ignore = [
     "E402",    # module-import-not-at-top-of-file
     "F841",    # unused-variable
-    "UP007",   # non-pep604-annotation
     "B901",    # allow return in yield
     "B903",    # class-as-data-structure
     "B904",    # raise-without-from-inside-except
diff --git a/api/controllers/mcp/mcp.py b/api/controllers/mcp/mcp.py
index 98ac0acce18..6295bf00ebc 100644
--- a/api/controllers/mcp/mcp.py
+++ b/api/controllers/mcp/mcp.py
@@ -1,4 +1,4 @@
-from typing import Any, Union
+from typing import Any
 
 from flask import Response, request
 from flask_restx import Resource
@@ -69,7 +69,7 @@ class MCPAppApi(Resource):
         """
         # response-contract:ignore MCP route returns Flask Response from JSON-RPC handler
         args = MCPRequestPayload.model_validate(mcp_ns.payload or {})
-        request_id: Union[int, str] | None = args.id
+        request_id: int | str | None = args.id
         mcp_request = self._parse_mcp_request(args.model_dump(exclude_none=True))
 
         # Resolve the negotiated protocol version from the MCP-Protocol-Version header.
@@ -98,9 +98,7 @@ class MCPAppApi(Resource):
             session.commit()
             return response
 
-    def _protocol_version_error_response(
-        self, request_id: Union[int, str] | None, header_value: str | None
-    ) -> Response:
+    def _protocol_version_error_response(self, request_id: int | str | None, header_value: str | None) -> Response:
         """Return a JSON-RPC error for an unsupported MCP-Protocol-Version header.
 
         Per JSON-RPC 2.0, an error whose request id is unknown uses a null id, so we echo the
@@ -137,7 +135,7 @@ class MCPAppApi(Resource):
     def _process_mcp_message(
         self,
         mcp_request: mcp_types.ClientRequest | mcp_types.ClientNotification,
-        request_id: Union[int, str] | None,
+        request_id: int | str | None,
         app: App,
         mcp_server: AppMCPServer,
         user_input_form: list[VariableEntity],
@@ -163,7 +161,7 @@ class MCPAppApi(Resource):
     def _handle_request(
         self,
         mcp_request: mcp_types.ClientRequest,
-        request_id: Union[int, str] | None,
+        request_id: int | str | None,
         app: App,
         mcp_server: AppMCPServer,
         user_input_form: list[VariableEntity],
@@ -272,7 +270,7 @@ class MCPAppApi(Resource):
         mcp_request: mcp_types.ClientRequest,
         user_input_form: list[VariableEntity],
         session: Session,
-        request_id: Union[int, str],
+        request_id: int | str,
         protocol_version: str,
     ) -> mcp_types.JSONRPCResponse | mcp_types.JSONRPCError | None:
         """Handle MCP request and return response"""
diff --git a/api/core/agent/base_agent_runner.py b/api/core/agent/base_agent_runner.py
index 0bbc3880c58..37fb7d3539e 100644
--- a/api/core/agent/base_agent_runner.py
+++ b/api/core/agent/base_agent_runner.py
@@ -2,7 +2,7 @@ import json
 import logging
 import uuid
 from decimal import Decimal
-from typing import Union, cast
+from typing import cast
 
 from sqlalchemy import func, select
 from sqlalchemy.orm import Session
@@ -269,10 +269,10 @@ class BaseAgentRunner(AppRunner):
         self,
         agent_thought_id: str,
         tool_name: str | None,
-        tool_input: Union[str, dict, None],
+        tool_input: str | dict | None,
         thought: str | None,
-        observation: Union[str, dict, None],
-        tool_invoke_meta: Union[str, dict, None],
+        observation: str | dict | None,
+        tool_invoke_meta: str | dict | None,
         answer: str | None,
         messages_ids: list[str],
         llm_usage: LLMUsage | None = None,
diff --git a/api/core/agent/entities.py b/api/core/agent/entities.py
index 220feced1d1..026545f2f44 100644
--- a/api/core/agent/entities.py
+++ b/api/core/agent/entities.py
@@ -1,5 +1,5 @@
 from enum import StrEnum
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, Field
 
@@ -39,7 +39,7 @@ class AgentScratchpadUnit(BaseModel):
         """
 
         action_name: str
-        action_input: Union[dict, str]
+        action_input: dict | str
 
         def to_dict(self):
             """
diff --git a/api/core/agent/fc_agent_runner.py b/api/core/agent/fc_agent_runner.py
index a3bd64c1b2a..1b204608632 100644
--- a/api/core/agent/fc_agent_runner.py
+++ b/api/core/agent/fc_agent_runner.py
@@ -3,7 +3,7 @@ import logging
 import re
 from collections.abc import Generator
 from copy import deepcopy
-from typing import Any, Union
+from typing import Any
 
 from sqlalchemy import select
 from sqlalchemy.orm import Session
@@ -173,7 +173,7 @@ class FunctionCallAgentRunner(BaseAgentRunner):
                 "created_by": CreditUsageCreatedBy.APP,
             }
 
-            chunks: Union[Generator[LLMResultChunk], LLMResult] = model_instance.invoke_llm(
+            chunks: Generator[LLMResultChunk] | LLMResult = model_instance.invoke_llm(
                 prompt_messages=prompt_messages,
                 model_parameters=app_generate_entity.model_conf.parameters,
                 tools=prompt_messages_tools,
diff --git a/api/core/agent/output_parser/cot_output_parser.py b/api/core/agent/output_parser/cot_output_parser.py
index fb854ced2eb..75da9133b5f 100644
--- a/api/core/agent/output_parser/cot_output_parser.py
+++ b/api/core/agent/output_parser/cot_output_parser.py
@@ -1,7 +1,7 @@
 import json
 import re
 from collections.abc import Generator
-from typing import Any, Union
+from typing import Any
 
 from core.agent.entities import AgentScratchpadUnit
 from graphon.model_runtime.entities.llm_entities import LLMResultChunk
@@ -11,8 +11,8 @@ class CotAgentOutputParser:
     @classmethod
     def handle_react_stream_output(
         cls, llm_response: Generator[LLMResultChunk], usage_dict: dict[str, Any]
-    ) -> Generator[Union[str, AgentScratchpadUnit.Action]]:
-        def parse_action(action) -> Union[str, AgentScratchpadUnit.Action]:
+    ) -> Generator[str | AgentScratchpadUnit.Action]:
+        def parse_action(action) -> str | AgentScratchpadUnit.Action:
             action_name = None
             action_input = None
             if isinstance(action, str):
@@ -39,7 +39,7 @@ class CotAgentOutputParser:
             else:
                 return json.dumps(action)
 
-        def extra_json_from_code_block(code_block) -> list[Union[list, dict]]:
+        def extra_json_from_code_block(code_block) -> list[list | dict]:
             blocks = re.findall(r"```[json]*\s*([\[{].*[]}])\s*```", code_block, re.DOTALL | re.IGNORECASE)
             if not blocks:
                 return []
diff --git a/api/core/app/apps/advanced_chat/generate_task_pipeline.py b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
index bad6020054d..8497714f685 100644
--- a/api/core/app/apps/advanced_chat/generate_task_pipeline.py
+++ b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
@@ -6,7 +6,7 @@ from contextlib import contextmanager
 from dataclasses import dataclass
 from datetime import datetime
 from threading import Thread
-from typing import Any, Union
+from typing import Any
 
 from sqlalchemy import select, update
 from sqlalchemy.orm import Session
@@ -152,7 +152,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         queue_manager: AppQueueManager,
         conversation: ConversationSnapshot,
         message: MessageSnapshot,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         stream: bool,
         dialogue_count: int,
         draft_var_saver_factory: DraftVariableSaverFactory,
@@ -219,11 +219,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def process(
         self,
-    ) -> Union[
-        ChatbotAppBlockingResponse,
-        AdvancedChatPausedBlockingResponse,
-        Generator[ChatbotAppStreamResponse],
-    ]:
+    ) -> ChatbotAppBlockingResponse | AdvancedChatPausedBlockingResponse | Generator[ChatbotAppStreamResponse]:
         """
         Process generate task pipeline.
         :return:
@@ -243,7 +239,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def _to_blocking_response(
         self, generator: Generator[StreamResponse]
-    ) -> Union[ChatbotAppBlockingResponse, AdvancedChatPausedBlockingResponse]:
+    ) -> ChatbotAppBlockingResponse | AdvancedChatPausedBlockingResponse:
         """
         Process blocking response.
         :return:
@@ -515,7 +511,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def _handle_node_failed_events(
         self,
-        event: Union[QueueNodeFailedEvent, QueueNodeExceptionEvent],
+        event: QueueNodeFailedEvent | QueueNodeExceptionEvent,
         **kwargs,
     ) -> Generator[StreamResponse]:
         """Handle various node failure events."""
@@ -535,7 +531,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         event: QueueTextChunkEvent,
         *,
         tts_publisher: AppGeneratorTTSPublisher | None = None,
-        queue_message: Union[WorkflowQueueMessage, MessageQueueMessage] | None = None,
+        queue_message: WorkflowQueueMessage | MessageQueueMessage | None = None,
         **kwargs,
     ) -> Generator[StreamResponse]:
         """Handle text chunk events."""
@@ -952,7 +948,7 @@ class AdvancedChatAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         *,
         tts_publisher: AppGeneratorTTSPublisher | None = None,
         trace_manager: TraceQueueManager | None = None,
-        queue_message: Union[WorkflowQueueMessage, MessageQueueMessage] | None = None,
+        queue_message: WorkflowQueueMessage | MessageQueueMessage | None = None,
     ) -> Generator[StreamResponse]:
         """Dispatch events using elegant pattern matching."""
         handlers = self._get_event_handlers()
diff --git a/api/core/app/apps/base_app_generate_response_converter.py b/api/core/app/apps/base_app_generate_response_converter.py
index 07bbdadaea3..fd92583e671 100644
--- a/api/core/app/apps/base_app_generate_response_converter.py
+++ b/api/core/app/apps/base_app_generate_response_converter.py
@@ -1,7 +1,7 @@
 import logging
 from abc import ABC, abstractmethod
 from collections.abc import Generator, Mapping
-from typing import Any, Union, cast
+from typing import Any, cast
 
 from dify_agent.protocol import RunFailureType
 from pydantic import JsonValue
@@ -23,7 +23,7 @@ class AppGenerateResponseConverter[TBlockingResponse: AppBlockingResponse](ABC):
 
     @classmethod
     def convert(
-        cls, response: Union[AppBlockingResponse, Generator[AppStreamResponse, Any]], invoke_from: InvokeFrom
+        cls, response: AppBlockingResponse | Generator[AppStreamResponse, Any], invoke_from: InvokeFrom
     ) -> Mapping[str, Any] | Generator[str | Mapping[str, Any], Any]:
         if invoke_from in {InvokeFrom.DEBUGGER, InvokeFrom.SERVICE_API, InvokeFrom.OPENAPI}:
             if isinstance(response, AppBlockingResponse):
diff --git a/api/core/app/apps/base_app_generator.py b/api/core/app/apps/base_app_generator.py
index 0305952724f..0964b9a33ba 100644
--- a/api/core/app/apps/base_app_generator.py
+++ b/api/core/app/apps/base_app_generator.py
@@ -2,7 +2,7 @@ import logging
 import threading
 from collections.abc import Generator, Mapping, Sequence
 from contextlib import AbstractContextManager, nullcontext
-from typing import TYPE_CHECKING, Any, Union, final
+from typing import TYPE_CHECKING, Any, final
 
 from sqlalchemy.orm import Session
 from sqlalchemy.orm.attributes import set_committed_value
@@ -310,7 +310,7 @@ class BaseAppGenerator:
         return value
 
     @classmethod
-    def convert_to_event_stream(cls, generator: Union[Mapping, Generator[Mapping | str]]):
+    def convert_to_event_stream(cls, generator: Mapping | Generator[Mapping | str]):
         """
         Convert messages into event stream
         """
diff --git a/api/core/app/apps/base_app_runner.py b/api/core/app/apps/base_app_runner.py
index 30b7605756b..774cf255968 100644
--- a/api/core/app/apps/base_app_runner.py
+++ b/api/core/app/apps/base_app_runner.py
@@ -3,7 +3,7 @@ import logging
 import time
 from collections.abc import Generator, Mapping, Sequence
 from mimetypes import guess_extension
-from typing import TYPE_CHECKING, Any, Union
+from typing import TYPE_CHECKING, Any
 
 from sqlalchemy.orm import Session
 
@@ -115,7 +115,7 @@ class AppRunner:
         """
         # get prompt without memory and context
         if prompt_template_entity.prompt_type == PromptTemplateEntity.PromptType.SIMPLE:
-            prompt_transform: Union[SimplePromptTransform, AdvancedPromptTransform]
+            prompt_transform: SimplePromptTransform | AdvancedPromptTransform
             prompt_transform = SimplePromptTransform()
             prompt_messages, stop = prompt_transform.get_prompt(
                 app_mode=AppMode.value_of(app_record.mode),
@@ -133,7 +133,7 @@ class AppRunner:
             memory_config = MemoryConfig(window=MemoryConfig.WindowConfig(enabled=False))
 
             model_mode = ModelMode(model_config.mode)
-            prompt_template: Union[CompletionModelPromptTemplate, list[ChatModelMessage]]
+            prompt_template: CompletionModelPromptTemplate | list[ChatModelMessage]
             if model_mode == ModelMode.COMPLETION:
                 advanced_completion_prompt_template = prompt_template_entity.advanced_completion_prompt_template
                 if not advanced_completion_prompt_template:
@@ -212,7 +212,7 @@ class AppRunner:
 
     def _handle_invoke_result(
         self,
-        invoke_result: Union[LLMResult, Generator[Any]],
+        invoke_result: LLMResult | Generator[Any],
         queue_manager: AppQueueManager,
         stream: bool,
         agent: bool = False,
diff --git a/api/core/app/apps/common/workflow_response_converter.py b/api/core/app/apps/common/workflow_response_converter.py
index e95a68c0b44..77ff812b2c9 100644
--- a/api/core/app/apps/common/workflow_response_converter.py
+++ b/api/core/app/apps/common/workflow_response_converter.py
@@ -4,7 +4,7 @@ import time
 from collections.abc import Mapping, Sequence
 from dataclasses import dataclass
 from datetime import datetime
-from typing import Any, NewType, TypedDict, Union
+from typing import Any, NewType, TypedDict
 
 from sqlalchemy import select
 from sqlalchemy.orm import Session
@@ -127,8 +127,8 @@ class WorkflowResponseConverter:
     def __init__(
         self,
         *,
-        application_generate_entity: Union[AdvancedChatAppGenerateEntity, WorkflowAppGenerateEntity],
-        user: Union[Account, EndUser],
+        application_generate_entity: AdvancedChatAppGenerateEntity | WorkflowAppGenerateEntity,
+        user: Account | EndUser,
         system_variables: Sequence[Variable],
     ):
         self._application_generate_entity = application_generate_entity
@@ -857,7 +857,7 @@ class WorkflowResponseConverter:
 
     @classmethod
     def _fetch_files_from_variable_value(
-        cls, value: Union[dict, list, Segment, File, None]
+        cls, value: dict | list | Segment | File | None
     ) -> Sequence[Mapping[str, Any]]:
         """
         Fetch files from variable value
diff --git a/api/core/app/apps/message_based_app_generator.py b/api/core/app/apps/message_based_app_generator.py
index ea6d27f46af..42d2247d86e 100644
--- a/api/core/app/apps/message_based_app_generator.py
+++ b/api/core/app/apps/message_based_app_generator.py
@@ -1,7 +1,7 @@
 import json
 import logging
 from collections.abc import Callable, Generator, Mapping
-from typing import Union, cast
+from typing import cast
 
 from sqlalchemy import select
 from sqlalchemy.orm import Session
@@ -46,21 +46,17 @@ logger = logging.getLogger(__name__)
 class MessageBasedAppGenerator(BaseAppGenerator):
     def _handle_response(
         self,
-        application_generate_entity: Union[
-            ChatAppGenerateEntity,
-            CompletionAppGenerateEntity,
-            AgentChatAppGenerateEntity,
-        ],
+        application_generate_entity: ChatAppGenerateEntity | CompletionAppGenerateEntity | AgentChatAppGenerateEntity,
         queue_manager: AppQueueManager,
         conversation: Conversation,
         message: Message,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         stream: bool = False,
-    ) -> Union[
-        ChatbotAppBlockingResponse,
-        CompletionAppBlockingResponse,
-        Generator[Union[ChatbotAppStreamResponse, CompletionAppStreamResponse]],
-    ]:
+    ) -> (
+        ChatbotAppBlockingResponse
+        | CompletionAppBlockingResponse
+        | Generator[ChatbotAppStreamResponse | CompletionAppStreamResponse]
+    ):
         """
         Handle response.
         :param application_generate_entity: application generate entity
@@ -117,12 +113,10 @@ class MessageBasedAppGenerator(BaseAppGenerator):
 
     def _init_generate_records(
         self,
-        application_generate_entity: Union[
-            ChatAppGenerateEntity,
-            CompletionAppGenerateEntity,
-            AgentChatAppGenerateEntity,
-            AdvancedChatAppGenerateEntity,
-        ],
+        application_generate_entity: ChatAppGenerateEntity
+        | CompletionAppGenerateEntity
+        | AgentChatAppGenerateEntity
+        | AdvancedChatAppGenerateEntity,
         conversation: Conversation | None = None,
         *,
         session: Session,
diff --git a/api/core/app/apps/workflow/generate_task_pipeline.py b/api/core/app/apps/workflow/generate_task_pipeline.py
index 90360f76bb6..e5f9e68b2aa 100644
--- a/api/core/app/apps/workflow/generate_task_pipeline.py
+++ b/api/core/app/apps/workflow/generate_task_pipeline.py
@@ -2,7 +2,6 @@ import logging
 import time
 from collections.abc import Callable, Generator
 from contextlib import contextmanager
-from typing import Union
 
 from sqlalchemy.orm import Session, sessionmaker
 
@@ -83,7 +82,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         application_generate_entity: WorkflowAppGenerateEntity,
         workflow: Workflow,
         queue_manager: AppQueueManager,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         stream: bool,
         draft_var_saver_factory: DraftVariableSaverFactory,
     ):
@@ -124,7 +123,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def process(
         self,
-    ) -> Union[WorkflowAppBlockingResponse, WorkflowAppPausedBlockingResponse, Generator[WorkflowAppStreamResponse]]:
+    ) -> WorkflowAppBlockingResponse | WorkflowAppPausedBlockingResponse | Generator[WorkflowAppStreamResponse]:
         """
         Process generate task pipeline.
         :return:
@@ -137,7 +136,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def _to_blocking_response(
         self, generator: Generator[StreamResponse]
-    ) -> Union[WorkflowAppBlockingResponse, WorkflowAppPausedBlockingResponse]:
+    ) -> WorkflowAppBlockingResponse | WorkflowAppPausedBlockingResponse:
         """
         To blocking response.
         :return:
@@ -383,7 +382,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def _handle_node_failed_events(
         self,
-        event: Union[QueueNodeFailedEvent, QueueNodeExceptionEvent],
+        event: QueueNodeFailedEvent | QueueNodeExceptionEvent,
         **kwargs,
     ) -> Generator[StreamResponse]:
         """Handle various node failure events."""
@@ -523,7 +522,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
 
     def _handle_workflow_failed_and_stop_events(
         self,
-        event: Union[QueueWorkflowFailedEvent, QueueStopEvent],
+        event: QueueWorkflowFailedEvent | QueueStopEvent,
         *,
         trace_manager: TraceQueueManager | None = None,
         **kwargs,
@@ -556,7 +555,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         event: QueueTextChunkEvent,
         *,
         tts_publisher: AppGeneratorTTSPublisher | None = None,
-        queue_message: Union[WorkflowQueueMessage, MessageQueueMessage] | None = None,
+        queue_message: WorkflowQueueMessage | MessageQueueMessage | None = None,
         **kwargs,
     ) -> Generator[StreamResponse]:
         """Handle text chunk events."""
@@ -643,7 +642,7 @@ class WorkflowAppGenerateTaskPipeline(GraphRuntimeStateSupport):
         *,
         tts_publisher: AppGeneratorTTSPublisher | None = None,
         trace_manager: TraceQueueManager | None = None,
-        queue_message: Union[WorkflowQueueMessage, MessageQueueMessage] | None = None,
+        queue_message: WorkflowQueueMessage | MessageQueueMessage | None = None,
     ) -> Generator[StreamResponse]:
         """Dispatch events using elegant pattern matching."""
         handlers = self._get_event_handlers()
diff --git a/api/core/app/features/rate_limiting/rate_limit.py b/api/core/app/features/rate_limiting/rate_limit.py
index 8babb4af026..d495be83a95 100644
--- a/api/core/app/features/rate_limiting/rate_limit.py
+++ b/api/core/app/features/rate_limiting/rate_limit.py
@@ -4,7 +4,7 @@ import time
 import uuid
 from collections.abc import Generator, Mapping
 from datetime import timedelta
-from typing import Any, Union
+from typing import Any
 
 from core.errors.error import AppInvokeQuotaExceededError
 from extensions.ext_redis import redis_client
@@ -99,7 +99,7 @@ class RateLimit:
     def gen_request_key() -> str:
         return str(uuid.uuid4())
 
-    def generate(self, generator: Union[Generator[str], Mapping[str, Any]], request_id: str):
+    def generate(self, generator: Generator[str] | Mapping[str, Any], request_id: str):
         if isinstance(generator, Mapping):
             return generator
         else:
diff --git a/api/core/app/task_pipeline/message_cycle_manager.py b/api/core/app/task_pipeline/message_cycle_manager.py
index f1100d69ef2..d68dfb20c5b 100644
--- a/api/core/app/task_pipeline/message_cycle_manager.py
+++ b/api/core/app/task_pipeline/message_cycle_manager.py
@@ -1,7 +1,6 @@
 import hashlib
 import logging
 from threading import Thread, Timer
-from typing import Union
 
 from flask import Flask, current_app
 from sqlalchemy import select
@@ -45,13 +44,11 @@ class MessageCycleManager:
     def __init__(
         self,
         *,
-        application_generate_entity: Union[
-            ChatAppGenerateEntity,
-            CompletionAppGenerateEntity,
-            AgentChatAppGenerateEntity,
-            AdvancedChatAppGenerateEntity,
-        ],
-        task_state: Union[EasyUITaskState, WorkflowTaskState],
+        application_generate_entity: ChatAppGenerateEntity
+        | CompletionAppGenerateEntity
+        | AgentChatAppGenerateEntity
+        | AdvancedChatAppGenerateEntity,
+        task_state: EasyUITaskState | WorkflowTaskState,
     ):
         self._application_generate_entity = application_generate_entity
         self._task_state = task_state
diff --git a/api/core/app/workflow/layers/persistence.py b/api/core/app/workflow/layers/persistence.py
index 8b04661deb3..6edc745701d 100644
--- a/api/core/app/workflow/layers/persistence.py
+++ b/api/core/app/workflow/layers/persistence.py
@@ -12,7 +12,7 @@ state.
 from collections.abc import Mapping
 from dataclasses import dataclass
 from datetime import datetime
-from typing import Any, Union, override
+from typing import Any, override
 
 from core.app.entities.app_invoke_entities import AdvancedChatAppGenerateEntity, WorkflowAppGenerateEntity
 from core.app.workflow.retry_history import RETRY_HISTORY_PROCESS_DATA_KEY, WorkflowNodeRetryAttempt
@@ -86,7 +86,7 @@ class WorkflowPersistenceLayer(GraphEngineLayer):
     def __init__(
         self,
         *,
-        application_generate_entity: Union[AdvancedChatAppGenerateEntity, WorkflowAppGenerateEntity],
+        application_generate_entity: AdvancedChatAppGenerateEntity | WorkflowAppGenerateEntity,
         workflow_info: PersistenceWorkflowInfo,
         workflow_execution_repository: WorkflowExecutionRepository,
         workflow_node_execution_repository: WorkflowNodeExecutionRepository,
diff --git a/api/core/callback_handler/agent_tool_callback_handler.py b/api/core/callback_handler/agent_tool_callback_handler.py
index 6591b08a7e8..79b3b869803 100644
--- a/api/core/callback_handler/agent_tool_callback_handler.py
+++ b/api/core/callback_handler/agent_tool_callback_handler.py
@@ -1,5 +1,5 @@
 from collections.abc import Iterable, Mapping
-from typing import Any, TextIO, Union
+from typing import Any, TextIO
 
 from pydantic import BaseModel
 
@@ -82,7 +82,7 @@ class DifyAgentCallbackHandler(BaseModel):
                 )
             )
 
-    def on_tool_error(self, error: Union[Exception, KeyboardInterrupt], **kwargs: Any):
+    def on_tool_error(self, error: Exception | KeyboardInterrupt, **kwargs: Any):
         """Do nothing."""
         if dify_config.DEBUG:
             print_text("\n[on_tool_error] Error: " + str(error) + "\n", color="red")
diff --git a/api/core/datasource/datasource_file_manager.py b/api/core/datasource/datasource_file_manager.py
index 317f362d662..e9b4baf0ae1 100644
--- a/api/core/datasource/datasource_file_manager.py
+++ b/api/core/datasource/datasource_file_manager.py
@@ -6,7 +6,6 @@ import os
 import time
 from datetime import datetime
 from mimetypes import guess_extension, guess_type
-from typing import Union
 from uuid import uuid4
 
 import httpx
@@ -135,7 +134,7 @@ class DatasourceFileManager:
         return tool_file
 
     @staticmethod
-    def get_file_binary(id: str) -> Union[tuple[bytes, str], None]:
+    def get_file_binary(id: str) -> tuple[bytes, str] | None:
         """
         get file binary
 
@@ -154,7 +153,7 @@ class DatasourceFileManager:
         return blob, upload_file.mime_type
 
     @staticmethod
-    def get_file_binary_by_message_file_id(id: str) -> Union[tuple[bytes, str], None]:
+    def get_file_binary_by_message_file_id(id: str) -> tuple[bytes, str] | None:
         """
         get file binary
 
diff --git a/api/core/entities/provider_entities.py b/api/core/entities/provider_entities.py
index 4ac7614425c..25428bd2fad 100644
--- a/api/core/entities/provider_entities.py
+++ b/api/core/entities/provider_entities.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from enum import StrEnum, auto
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, ConfigDict, Field
 
@@ -208,7 +208,7 @@ class ProviderConfig(BasicProviderConfig):
 
     scope: AppSelectorScope | ModelSelectorScope | ToolSelectorScope | None = None
     required: bool = False
-    default: Union[int, str, float, bool] | None = None
+    default: int | str | float | bool | None = None
     options: list[Option] | None = None
     multiple: bool = False
     label: I18nObject | None = None
diff --git a/api/core/model_manager.py b/api/core/model_manager.py
index 384a537a781..d43c15a382f 100644
--- a/api/core/model_manager.py
+++ b/api/core/model_manager.py
@@ -1,7 +1,7 @@
 import logging
 from collections.abc import Callable, Generator, Iterable, Mapping, Sequence
 from copy import deepcopy
-from typing import IO, Any, Literal, Optional, ParamSpec, TypeVar, Union, cast, overload, override
+from typing import IO, Any, Literal, Optional, ParamSpec, TypeVar, cast, overload, override
 from uuid import UUID
 
 from configs import dify_config
@@ -176,7 +176,7 @@ class ModelInstance:
         stream: bool = True,
         callbacks: list[Callback] | None = None,
         request_metadata: Mapping[str, object] | None = None,
-    ) -> Union[LLMResult, Generator]: ...
+    ) -> LLMResult | Generator: ...
 
     def invoke_llm(
         self,
@@ -187,7 +187,7 @@ class ModelInstance:
         stream: bool = True,
         callbacks: list[Callback] | None = None,
         request_metadata: Mapping[str, object] | None = None,
-    ) -> Union[LLMResult, Generator]:
+    ) -> LLMResult | Generator:
         """
         Invoke large language model
 
@@ -204,7 +204,7 @@ class ModelInstance:
             raise Exception("Model type instance is not LargeLanguageModel")
         request_metadata = self._resolve_request_metadata(request_metadata)
         return cast(
-            Union[LLMResult, Generator],
+            LLMResult | Generator,
             self._round_robin_invoke(
                 self.model_type_instance.invoke,
                 model=self.model_name,
@@ -437,7 +437,7 @@ class ModelInstance:
         if not self.load_balancing_manager:
             return function(*args, **kwargs)
 
-        last_exception: Union[InvokeRateLimitError, InvokeAuthorizationError, InvokeConnectionError, None] = None
+        last_exception: InvokeRateLimitError | InvokeAuthorizationError | InvokeConnectionError | None = None
         while True:
             lb_config = self.load_balancing_manager.fetch_next()
             if not lb_config:
@@ -620,7 +620,7 @@ class QuotaManagedModelInstance(ModelInstance):
         stream: bool = True,
         callbacks: list[Callback] | None = None,
         request_metadata: Mapping[str, object] | None = None,
-    ) -> Union[LLMResult, Generator]: ...
+    ) -> LLMResult | Generator: ...
 
     @override
     def invoke_llm(
@@ -632,7 +632,7 @@ class QuotaManagedModelInstance(ModelInstance):
         stream: bool = True,
         callbacks: list[Callback] | None = None,
         request_metadata: Mapping[str, object] | None = None,
-    ) -> Union[LLMResult, Generator]:
+    ) -> LLMResult | Generator:
         normalized_prompt_messages = list(prompt_messages)
         normalized_stop = list(stop) if stop else None
         if stream:
diff --git a/api/core/ops/entities/trace_entity.py b/api/core/ops/entities/trace_entity.py
index bfbc5a8cc2e..e9685a208ee 100644
--- a/api/core/ops/entities/trace_entity.py
+++ b/api/core/ops/entities/trace_entity.py
@@ -1,7 +1,7 @@
 from collections.abc import Mapping
 from datetime import datetime
 from enum import StrEnum
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, ConfigDict, field_serializer, field_validator
 
@@ -12,8 +12,8 @@ class BaseTraceInfo(BaseModel):
     operation_id: str | None = None
     message_id: str | None = None
     message_data: Any | None = None
-    inputs: Union[str, dict[str, Any], list[Any]] | None = None
-    outputs: Union[str, dict[str, Any], list[Any]] | None = None
+    inputs: str | dict[str, Any] | list[Any] | None = None
+    outputs: str | dict[str, Any] | list[Any] | None = None
     start_time: datetime | None = None
     end_time: datetime | None = None
     metadata: dict[str, Any]
@@ -92,7 +92,7 @@ class WorkflowTraceInfo(BaseTraceInfo):
     workflow_id: str
     tenant_id: str
     workflow_run_id: str
-    workflow_run_elapsed_time: Union[int, float]
+    workflow_run_elapsed_time: int | float
     workflow_run_status: str
     workflow_run_inputs: Mapping[str, Any]
     workflow_run_outputs: Mapping[str, Any]
@@ -113,7 +113,7 @@ class MessageTraceInfo(BaseTraceInfo):
     answer_tokens: int
     total_tokens: int
     error: str | None = None
-    file_list: Union[str, dict[str, Any], list[Any]] | None = None
+    file_list: str | dict[str, Any] | list[Any] | None = None
     message_file_data: Any | None = None
     conversation_mode: str
     gen_ai_server_time_to_first_token: float | None = None
@@ -158,9 +158,9 @@ class ToolTraceInfo(BaseTraceInfo):
     message_file_data: Any = None
     error: str | None = None
     tool_config: dict[str, Any]
-    time_cost: Union[int, float]
+    time_cost: int | float
     tool_parameters: dict[str, Any]
-    file_url: Union[str, None, list[str]] = None
+    file_url: str | None | list[str] = None
 
 
 class GenerateNameTraceInfo(BaseTraceInfo):
diff --git a/api/core/ops/utils.py b/api/core/ops/utils.py
index 87e0f52a76d..0526c6ab5be 100644
--- a/api/core/ops/utils.py
+++ b/api/core/ops/utils.py
@@ -1,6 +1,6 @@
 from contextlib import contextmanager
 from datetime import datetime
-from typing import Any, Union
+from typing import Any
 from urllib.parse import urlparse
 
 from pydantic import TypeAdapter
@@ -54,7 +54,7 @@ def replace_text_with_content(data):
             return data
 
 
-def generate_dotted_order(run_id: str, start_time: Union[str, datetime], parent_dotted_order: str | None = None) -> str:
+def generate_dotted_order(run_id: str, start_time: str | datetime, parent_dotted_order: str | None = None) -> str:
     """
     generate dotted_order for langsmith
     """
diff --git a/api/core/plugin/entities/parameters.py b/api/core/plugin/entities/parameters.py
index 8d66376f7ec..1e08737cbe0 100644
--- a/api/core/plugin/entities/parameters.py
+++ b/api/core/plugin/entities/parameters.py
@@ -1,7 +1,7 @@
 import json
 from datetime import date
 from enum import StrEnum, auto
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, Field, field_validator
 
@@ -80,9 +80,9 @@ class PluginParameter(BaseModel):
     auto_generate: PluginParameterAutoGenerate | None = None
     template: PluginParameterTemplate | None = None
     required: bool = False
-    default: Union[float, int, str, bool, list, dict] | None = None
-    min: Union[float, int] | None = None
-    max: Union[float, int] | None = None
+    default: float | int | str | bool | list | dict | None = None
+    min: float | int | None = None
+    max: float | int | None = None
     precision: int | None = None
     options: list[PluginParameterOption] = Field(default_factory=list)
 
diff --git a/api/core/rag/retrieval/dataset_retrieval.py b/api/core/rag/retrieval/dataset_retrieval.py
index d81f26f88e9..7498842fb40 100644
--- a/api/core/rag/retrieval/dataset_retrieval.py
+++ b/api/core/rag/retrieval/dataset_retrieval.py
@@ -6,7 +6,7 @@ import threading
 import time
 from collections import Counter, defaultdict
 from collections.abc import Generator, Mapping
-from typing import Any, Union, cast
+from typing import Any, cast
 
 from flask import Flask, current_app
 from opentelemetry.trace import get_current_span
@@ -1822,7 +1822,7 @@ class DatasetRetrieval:
         model_mode = ModelMode(mode)
         input_text = query
 
-        prompt_template: Union[CompletionModelPromptTemplate, list[ChatModelMessage]]
+        prompt_template: CompletionModelPromptTemplate | list[ChatModelMessage]
         if model_mode == ModelMode.CHAT:
             prompt_template = []
             system_prompt_messages = ChatModelMessage(role=PromptMessageRole.SYSTEM, text=METADATA_FILTER_SYSTEM_PROMPT)
diff --git a/api/core/rag/retrieval/output_parser/react_output.py b/api/core/rag/retrieval/output_parser/react_output.py
index 29abae42803..08627c3c1a9 100644
--- a/api/core/rag/retrieval/output_parser/react_output.py
+++ b/api/core/rag/retrieval/output_parser/react_output.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import Any, NamedTuple, Union
+from typing import Any, NamedTuple
 
 
 @dataclass
@@ -10,7 +10,7 @@ class ReactAction:
 
     tool: str
     """The name of the Tool to execute."""
-    tool_input: Union[str, dict[str, Any]]
+    tool_input: str | dict[str, Any]
     """The input to pass in to the Tool."""
     log: str
     """Additional information to log about the action."""
diff --git a/api/core/rag/retrieval/output_parser/structured_chat.py b/api/core/rag/retrieval/output_parser/structured_chat.py
index 5d9001890e5..3011be58d2a 100644
--- a/api/core/rag/retrieval/output_parser/structured_chat.py
+++ b/api/core/rag/retrieval/output_parser/structured_chat.py
@@ -1,12 +1,11 @@
 import json
 import re
-from typing import Union
 
 from core.rag.retrieval.output_parser.react_output import ReactAction, ReactFinish
 
 
 class StructuredChatOutputParser:
-    def parse(self, text: str) -> Union[ReactAction, ReactFinish]:
+    def parse(self, text: str) -> ReactAction | ReactFinish:
         try:
             action_match = re.search(r"```(\w*)\n?({.*?)```", text, re.DOTALL)
             if action_match is not None:
diff --git a/api/core/rag/retrieval/router/multi_dataset_function_call_router.py b/api/core/rag/retrieval/router/multi_dataset_function_call_router.py
index 3dc6a6e1b2c..b88ffce59b9 100644
--- a/api/core/rag/retrieval/router/multi_dataset_function_call_router.py
+++ b/api/core/rag/retrieval/router/multi_dataset_function_call_router.py
@@ -1,5 +1,3 @@
-from typing import Union
-
 from core.app.entities.app_invoke_entities import ModelConfigWithCredentialsEntity
 from core.credit_usage import CreditUsageCreatedBy
 from core.model_context import with_credit_usage_created_by
@@ -16,7 +14,7 @@ class FunctionCallMultiDatasetRouter:
         dataset_tools: list[PromptMessageTool],
         model_config: ModelConfigWithCredentialsEntity,
         model_instance: ModelInstance,
-    ) -> tuple[Union[str, None], LLMUsage]:
+    ) -> tuple[str | None, LLMUsage]:
         """Given input, decided what to do.
         Returns:
             Action specifying what tool to use.
diff --git a/api/core/rag/retrieval/router/multi_dataset_react_route.py b/api/core/rag/retrieval/router/multi_dataset_react_route.py
index 7bd97428d60..cdb19f61944 100644
--- a/api/core/rag/retrieval/router/multi_dataset_react_route.py
+++ b/api/core/rag/retrieval/router/multi_dataset_react_route.py
@@ -1,5 +1,5 @@
 from collections.abc import Generator, Sequence
-from typing import Any, Union
+from typing import Any
 
 from core.app.entities.app_invoke_entities import ModelConfigWithCredentialsEntity
 from core.credit_usage import CreditUsageCreatedBy
@@ -60,7 +60,7 @@ class ReactMultiDatasetRouter:
         model_instance: ModelInstance,
         user_id: str,
         tenant_id: str,
-    ) -> tuple[Union[str, None], LLMUsage]:
+    ) -> tuple[str | None, LLMUsage]:
         """Given input, decided what to do.
         Returns:
             Action specifying what tool to use.
@@ -93,8 +93,8 @@ class ReactMultiDatasetRouter:
         prefix: str = PREFIX,
         suffix: str = SUFFIX,
         format_instructions: str = FORMAT_INSTRUCTIONS,
-    ) -> tuple[Union[str, None], LLMUsage]:
-        prompt: Union[list[ChatModelMessage], CompletionModelPromptTemplate]
+    ) -> tuple[str | None, LLMUsage]:
+        prompt: list[ChatModelMessage] | CompletionModelPromptTemplate
         if model_config.mode == "chat":
             prompt = self.create_chat_prompt(
                 query=query,
diff --git a/api/core/tools/custom_tool/tool.py b/api/core/tools/custom_tool/tool.py
index 6555feda1c1..951fd01bc72 100644
--- a/api/core/tools/custom_tool/tool.py
+++ b/api/core/tools/custom_tool/tool.py
@@ -2,7 +2,7 @@ import json
 from collections.abc import Generator
 from dataclasses import dataclass
 from os import getenv
-from typing import Any, Union, override
+from typing import Any, override
 from urllib.parse import urlencode
 
 import httpx
@@ -26,7 +26,7 @@ API_TOOL_DEFAULT_TIMEOUT = (
 class ParsedResponse:
     """Represents a parsed HTTP response with type information"""
 
-    content: Union[str, dict]
+    content: str | dict
     is_json: bool
 
     def to_string(self) -> str:
diff --git a/api/core/tools/entities/tool_entities.py b/api/core/tools/entities/tool_entities.py
index cc8123f0adb..1cab639cd50 100644
--- a/api/core/tools/entities/tool_entities.py
+++ b/api/core/tools/entities/tool_entities.py
@@ -4,7 +4,7 @@ import base64
 import contextlib
 from collections.abc import Mapping
 from enum import StrEnum, auto
-from typing import Any, Union
+from typing import Any
 
 from pydantic import (
     BaseModel,
@@ -549,7 +549,7 @@ class ToolSelector(BaseModel):
         type: ToolParameter.ToolParameterType = Field(..., description="The type of the parameter")
         required: bool = Field(..., description="Whether the parameter is required")
         description: str = Field(..., description="The description of the parameter")
-        default: Union[int, float, str] | None = None
+        default: int | float | str | None = None
         options: list[PluginParameterOption] | None = None
 
     provider_id: str = Field(..., description="The id of the provider")
diff --git a/api/core/tools/tool_engine.py b/api/core/tools/tool_engine.py
index 043dcb54003..448054998bd 100644
--- a/api/core/tools/tool_engine.py
+++ b/api/core/tools/tool_engine.py
@@ -5,7 +5,7 @@ from collections.abc import Generator, Iterable
 from copy import deepcopy
 from datetime import UTC, datetime
 from mimetypes import guess_type
-from typing import Any, Union, cast
+from typing import Any, cast
 
 from sqlalchemy.orm import Session, sessionmaker
 from yarl import URL
@@ -49,7 +49,7 @@ class ToolEngine:
     def agent_invoke(
         session: Session,
         tool: Tool,
-        tool_parameters: Union[str, dict[str, Any]],
+        tool_parameters: str | dict[str, Any],
         user_id: str,
         tenant_id: str,
         message: Message,
diff --git a/api/core/trigger/entities/entities.py b/api/core/trigger/entities/entities.py
index 06a29bed111..6fa06912dbe 100644
--- a/api/core/trigger/entities/entities.py
+++ b/api/core/trigger/entities/entities.py
@@ -1,7 +1,7 @@
 from collections.abc import Mapping
 from datetime import datetime
 from enum import StrEnum
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, ConfigDict, Field, ValidationInfo, field_validator
 
@@ -51,9 +51,9 @@ class EventParameter(BaseModel):
         default=False,
         description="Whether the parameter is multiple select, only valid for select or dynamic-select type",
     )
-    default: Union[int, float, str, list[Any], None] = None
-    min: Union[float, int, None] = None
-    max: Union[float, int, None] = None
+    default: int | float | str | list[Any] | None = None
+    min: float | int | None = None
+    max: float | int | None = None
     precision: int | None = None
     options: list[PluginParameterOption] | None = None
     description: I18nObject | None = None
diff --git a/api/core/trigger/utils/encryption.py b/api/core/trigger/utils/encryption.py
index 8409be0813e..62ddcebb39d 100644
--- a/api/core/trigger/utils/encryption.py
+++ b/api/core/trigger/utils/encryption.py
@@ -1,5 +1,5 @@
 from collections.abc import Mapping
-from typing import Union, override
+from typing import override
 
 from core.entities.provider_entities import ProviderConfig, ProviderConfigType
 from core.helper.provider_cache import ProviderCredentialsCache
@@ -54,7 +54,7 @@ class TriggerProviderPropertiesCache(ProviderCredentialsCache):
 def create_trigger_provider_encrypter_for_subscription(
     tenant_id: str,
     controller: PluginTriggerProviderController,
-    subscription: Union[TriggerSubscription, TriggerProviderSubscriptionApiEntity],
+    subscription: TriggerSubscription | TriggerProviderSubscriptionApiEntity,
 ) -> tuple[ProviderConfigEncrypter, ProviderConfigCache]:
     cache = TriggerProviderCredentialsCache(
         tenant_id=tenant_id,
@@ -85,7 +85,7 @@ def delete_cache_for_subscription(tenant_id: str, provider_id: str, subscription
 def create_trigger_provider_encrypter_for_properties(
     tenant_id: str,
     controller: PluginTriggerProviderController,
-    subscription: Union[TriggerSubscription, TriggerProviderSubscriptionApiEntity],
+    subscription: TriggerSubscription | TriggerProviderSubscriptionApiEntity,
 ) -> tuple[ProviderConfigEncrypter, ProviderConfigCache]:
     cache = TriggerProviderPropertiesCache(
         tenant_id=tenant_id,
diff --git a/api/core/workflow/nodes/agent/entities.py b/api/core/workflow/nodes/agent/entities.py
index 16e026939df..7557bb9e17a 100644
--- a/api/core/workflow/nodes/agent/entities.py
+++ b/api/core/workflow/nodes/agent/entities.py
@@ -1,5 +1,5 @@
 from enum import IntEnum, StrEnum, auto
-from typing import Any, Literal, Union
+from typing import Any, Literal
 
 from pydantic import BaseModel, Field
 
@@ -21,7 +21,7 @@ class AgentNodeData(BaseNodeData):
     tool_node_version: str | None = None
 
     class AgentInput(BaseModel):
-        value: Union[list[str], list[ToolSelector], Any]
+        value: list[str] | list[ToolSelector] | Any
         type: Literal["mixed", "variable", "constant"]
 
     agent_parameters: dict[str, AgentInput] = Field(default_factory=dict)
diff --git a/api/core/workflow/nodes/datasource/entities.py b/api/core/workflow/nodes/datasource/entities.py
index 28966f2392c..8eb908743b5 100644
--- a/api/core/workflow/nodes/datasource/entities.py
+++ b/api/core/workflow/nodes/datasource/entities.py
@@ -1,4 +1,4 @@
-from typing import Any, Literal, Union
+from typing import Any, Literal
 
 from pydantic import BaseModel, field_validator
 from pydantic_core.core_schema import ValidationInfo
@@ -21,7 +21,7 @@ class DatasourceNodeData(BaseNodeData, DatasourceEntity):
 
     class DatasourceInput(BaseModel):
         # TODO: check this type
-        value: Union[Any, list[str]]
+        value: Any | list[str]
         type: Literal["mixed", "variable", "constant"] | None = None
 
         @field_validator("type", mode="before")
diff --git a/api/core/workflow/nodes/knowledge_index/entities.py b/api/core/workflow/nodes/knowledge_index/entities.py
index 12f47f3d57c..f57dbe68aae 100644
--- a/api/core/workflow/nodes/knowledge_index/entities.py
+++ b/api/core/workflow/nodes/knowledge_index/entities.py
@@ -1,4 +1,4 @@
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, field_validator
 
@@ -70,7 +70,7 @@ class GeneralStructureChunk(BaseModel):
     """
 
     general_chunks: list[str]
-    data_source_info: Union[FileInfo, OnlineDocumentInfo, WebsiteInfo]
+    data_source_info: FileInfo | OnlineDocumentInfo | WebsiteInfo
 
 
 class ParentChildChunk(BaseModel):
@@ -88,7 +88,7 @@ class ParentChildStructureChunk(BaseModel):
     """
 
     parent_child_chunks: list[ParentChildChunk]
-    data_source_info: Union[FileInfo, OnlineDocumentInfo, WebsiteInfo]
+    data_source_info: FileInfo | OnlineDocumentInfo | WebsiteInfo
 
 
 class KnowledgeIndexNodeData(BaseNodeData):
diff --git a/api/core/workflow/nodes/trigger_plugin/entities.py b/api/core/workflow/nodes/trigger_plugin/entities.py
index 23ed2cd4088..b67ec3520f8 100644
--- a/api/core/workflow/nodes/trigger_plugin/entities.py
+++ b/api/core/workflow/nodes/trigger_plugin/entities.py
@@ -1,5 +1,5 @@
 from collections.abc import Mapping
-from typing import Any, Literal, Union
+from typing import Any, Literal
 
 from pydantic import BaseModel, Field, ValidationInfo, field_validator
 
@@ -17,7 +17,7 @@ class TriggerEventNodeData(BaseNodeData):
     type: NodeType = TRIGGER_PLUGIN_NODE_TYPE
 
     class TriggerEventInput(BaseModel):
-        value: Union[Any, list[str]]
+        value: Any | list[str]
         type: Literal["mixed", "variable", "constant"]
 
         @field_validator("type", mode="before")
diff --git a/api/core/workflow/nodes/trigger_schedule/entities.py b/api/core/workflow/nodes/trigger_schedule/entities.py
index 683c8d420f2..79ed1179849 100644
--- a/api/core/workflow/nodes/trigger_schedule/entities.py
+++ b/api/core/workflow/nodes/trigger_schedule/entities.py
@@ -1,4 +1,4 @@
-from typing import Any, Literal, Union
+from typing import Any, Literal
 
 from pydantic import BaseModel, Field
 
@@ -47,6 +47,6 @@ class VisualConfig(BaseModel):
     )
 
     # For monthly frequency
-    monthly_days: list[Union[int, Literal["last"]]] | None = Field(
+    monthly_days: list[int | Literal["last"]] | None = Field(
         default=None, description="Days of month to run on (1-31 or 'last')"
     )
diff --git a/api/extensions/ext_otel.py b/api/extensions/ext_otel.py
index 3cc65040588..5ee6fed2601 100644
--- a/api/extensions/ext_otel.py
+++ b/api/extensions/ext_otel.py
@@ -3,7 +3,6 @@ import logging
 import os
 import platform
 import socket
-from typing import Union
 
 from configs import dify_config
 from dify_app import DifyApp
@@ -73,8 +72,8 @@ def init_app(app: DifyApp):
     provider = TracerProvider(resource=resource, sampler=sampler)
 
     set_tracer_provider(provider)
-    exporter: Union[GRPCSpanExporter, HTTPSpanExporter, ConsoleSpanExporter]
-    metric_exporter: Union[GRPCMetricExporter, HTTPMetricExporter, ConsoleMetricExporter]
+    exporter: GRPCSpanExporter | HTTPSpanExporter | ConsoleSpanExporter
+    metric_exporter: GRPCMetricExporter | HTTPMetricExporter | ConsoleMetricExporter
     protocol = (dify_config.OTEL_EXPORTER_OTLP_PROTOCOL or "").lower()
     if dify_config.OTEL_EXPORTER_TYPE == "otlp":
         if protocol == "grpc":
diff --git a/api/extensions/ext_redis.py b/api/extensions/ext_redis.py
index 8ff5db1643d..cc83efaa99e 100644
--- a/api/extensions/ext_redis.py
+++ b/api/extensions/ext_redis.py
@@ -5,7 +5,7 @@ import ssl
 import sys
 from collections.abc import Callable
 from datetime import timedelta
-from typing import Any, Protocol, Union, cast, runtime_checkable
+from typing import Any, Protocol, cast, runtime_checkable
 
 import redis
 from redis import RedisError
@@ -67,12 +67,12 @@ class RedisClientWrapper:
                            if the client is not initialized.
     """
 
-    _client: Union[redis.Redis, RedisCluster, None]
+    _client: redis.Redis | RedisCluster | None
 
     def __init__(self) -> None:
         self._client = None
 
-    def initialize(self, client: Union[redis.Redis, RedisCluster]) -> None:
+    def initialize(self, client: redis.Redis | RedisCluster) -> None:
         if self._client is None:
             self._client = client
 
@@ -299,7 +299,7 @@ class RedisBaseParamsDict(TypedDict):
     socket_keepalive_options: dict[int, int]
 
 
-def _get_ssl_configuration() -> tuple[type[Union[Connection, SSLConnection]], dict[str, Any]]:
+def _get_ssl_configuration() -> tuple[type[Connection | SSLConnection], dict[str, Any]]:
     """Get SSL configuration for Redis connection."""
     if not dify_config.REDIS_USE_SSL:
         return Connection, {}
@@ -416,7 +416,7 @@ def _parse_redis_nodes(value: str) -> list[tuple[str, int]]:
     return nodes
 
 
-def _create_sentinel_client(redis_params: RedisBaseParamsDict) -> Union[redis.Redis, RedisCluster]:
+def _create_sentinel_client(redis_params: RedisBaseParamsDict) -> redis.Redis | RedisCluster:
     """Create Redis client using Sentinel configuration."""
     if not dify_config.REDIS_SENTINELS:
         raise ValueError("REDIS_SENTINELS must be set when REDIS_USE_SENTINEL is True")
@@ -449,7 +449,7 @@ def _create_sentinel_client(redis_params: RedisBaseParamsDict) -> Union[redis.Re
     return master
 
 
-def _create_cluster_client() -> Union[redis.Redis, RedisCluster]:
+def _create_cluster_client() -> redis.Redis | RedisCluster:
     """Create Redis cluster client."""
     if not dify_config.REDIS_CLUSTERS:
         raise ValueError("REDIS_CLUSTERS must be set when REDIS_USE_CLUSTERS is True")
@@ -469,7 +469,7 @@ def _create_cluster_client() -> Union[redis.Redis, RedisCluster]:
     return cluster
 
 
-def _create_standalone_client(redis_params: RedisBaseParamsDict) -> Union[redis.Redis, RedisCluster]:
+def _create_standalone_client(redis_params: RedisBaseParamsDict) -> redis.Redis | RedisCluster:
     """Create standalone Redis client."""
     connection_class, ssl_kwargs = _get_ssl_configuration()
 
diff --git a/api/extensions/ext_storage.py b/api/extensions/ext_storage.py
index bc8b83b268b..a59e7118d51 100644
--- a/api/extensions/ext_storage.py
+++ b/api/extensions/ext_storage.py
@@ -1,6 +1,6 @@
 import logging
 from collections.abc import Callable, Generator
-from typing import Literal, Union, overload
+from typing import Literal, overload
 
 from flask import Flask
 
@@ -96,9 +96,9 @@ class Storage:
 
     # Keep a bool fallback overload for callers that forward a runtime bool flag.
     @overload
-    def load(self, filename: str, /, *, stream: bool = False) -> Union[bytes, Generator]: ...
+    def load(self, filename: str, /, *, stream: bool = False) -> bytes | Generator: ...
 
-    def load(self, filename: str, /, *, stream: bool = False) -> Union[bytes, Generator]:
+    def load(self, filename: str, /, *, stream: bool = False) -> bytes | Generator:
         if stream:
             return self.load_stream(filename)
         else:
diff --git a/api/libs/rsa.py b/api/libs/rsa.py
index c401129b3a4..8e5fad7833a 100644
--- a/api/libs/rsa.py
+++ b/api/libs/rsa.py
@@ -16,7 +16,6 @@ This is enforced by the "no-direct-rsa-imports" contract in .importlinter (run v
 """
 
 import hashlib
-from typing import Union
 
 from Crypto.Cipher import AES
 from Crypto.PublicKey import RSA
@@ -44,7 +43,7 @@ def generate_key_pair(tenant_id: str) -> str:
 prefix_hybrid = b"HYBRID:"
 
 
-def encrypt(text: str, public_key: Union[str, bytes]) -> bytes:
+def encrypt(text: str, public_key: str | bytes) -> bytes:
     if isinstance(public_key, str):
         public_key = public_key.encode()
 
diff --git a/api/providers/trace/trace-arize-phoenix/src/dify_trace_arize_phoenix/arize_phoenix_trace.py b/api/providers/trace/trace-arize-phoenix/src/dify_trace_arize_phoenix/arize_phoenix_trace.py
index 4199ec131a0..b4722eb720b 100644
--- a/api/providers/trace/trace-arize-phoenix/src/dify_trace_arize_phoenix/arize_phoenix_trace.py
+++ b/api/providers/trace/trace-arize-phoenix/src/dify_trace_arize_phoenix/arize_phoenix_trace.py
@@ -6,7 +6,7 @@ import traceback
 from collections.abc import Mapping, Sequence
 from dataclasses import dataclass, field
 from datetime import datetime, timedelta
-from typing import Any, Protocol, Union, cast, override
+from typing import Any, Protocol, cast, override
 from urllib.parse import urlparse
 
 from openinference.semconv.trace import (
@@ -188,7 +188,7 @@ def setup_tracer(arize_phoenix_config: ArizeConfig | PhoenixConfig) -> tuple[tra
     """Configure OpenTelemetry tracer with OTLP exporter for Arize/Phoenix."""
     try:
         # Choose the appropriate exporter based on config type
-        exporter: Union[GrpcOTLPSpanExporter, HttpOTLPSpanExporter]
+        exporter: GrpcOTLPSpanExporter | HttpOTLPSpanExporter
 
         # Inspect the provided endpoint to determine its structure
         parsed = urlparse(arize_phoenix_config.endpoint)
diff --git a/api/providers/trace/trace-langfuse/src/dify_trace_langfuse/entities/langfuse_trace_entity.py b/api/providers/trace/trace-langfuse/src/dify_trace_langfuse/entities/langfuse_trace_entity.py
index 742938f09f4..5b1a01e4bab 100644
--- a/api/providers/trace/trace-langfuse/src/dify_trace_langfuse/entities/langfuse_trace_entity.py
+++ b/api/providers/trace/trace-langfuse/src/dify_trace_langfuse/entities/langfuse_trace_entity.py
@@ -1,7 +1,7 @@
 from collections.abc import Mapping
 from datetime import datetime
 from enum import StrEnum
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, ConfigDict, Field, field_validator
 from pydantic_core.core_schema import ValidationInfo
@@ -62,10 +62,10 @@ class LangfuseTrace(BaseModel):
         default=None,
         description="Identifier of the trace. Useful for sorting/filtering in the UI.",
     )
-    input: Union[str, dict[str, Any], list, None] | None = Field(
+    input: str | dict[str, Any] | list | None | None = Field(
         default=None, description="The input of the trace. Can be any JSON object."
     )
-    output: Union[str, dict[str, Any], list, None] | None = Field(
+    output: str | dict[str, Any] | list | None | None = Field(
         default=None, description="The output of the trace. Can be any JSON object."
     )
     metadata: dict[str, Any] | None = Field(
@@ -157,10 +157,10 @@ class LangfuseSpan(BaseModel):
         description="The status message of the span. Additional field for context of the event. E.g. the error "
         "message of an error event.",
     )
-    input: Union[str, Mapping[str, Any], list, None] | None = Field(
+    input: str | Mapping[str, Any] | list | None | None = Field(
         default=None, description="The input of the span. Can be any JSON object."
     )
-    output: Union[str, Mapping[str, Any], list, None] | None = Field(
+    output: str | Mapping[str, Any] | list | None | None = Field(
         default=None, description="The output of the span. Can be any JSON object."
     )
     version: str | None = Field(
diff --git a/api/providers/trace/trace-langsmith/src/dify_trace_langsmith/entities/langsmith_trace_entity.py b/api/providers/trace/trace-langsmith/src/dify_trace_langsmith/entities/langsmith_trace_entity.py
index 07159d8a7e3..cdbedaf7399 100644
--- a/api/providers/trace/trace-langsmith/src/dify_trace_langsmith/entities/langsmith_trace_entity.py
+++ b/api/providers/trace/trace-langsmith/src/dify_trace_langsmith/entities/langsmith_trace_entity.py
@@ -1,7 +1,7 @@
 from collections.abc import Mapping
 from datetime import datetime
 from enum import StrEnum
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, Field, field_validator
 from pydantic_core.core_schema import ValidationInfo
@@ -31,8 +31,8 @@ class LangSmithMultiModel(BaseModel):
 
 class LangSmithRunModel(LangSmithTokenUsage, LangSmithMultiModel):
     name: str | None = Field(..., description="Name of the run")
-    inputs: Union[str, Mapping[str, Any], list, None] | None = Field(None, description="Inputs of the run")
-    outputs: Union[str, Mapping[str, Any], list, None] | None = Field(None, description="Outputs of the run")
+    inputs: str | Mapping[str, Any] | list | None | None = Field(None, description="Inputs of the run")
+    outputs: str | Mapping[str, Any] | list | None | None = Field(None, description="Outputs of the run")
     run_type: LangSmithRunType = Field(..., description="Type of the run")
     start_time: datetime | str | None = Field(None, description="Start time of the run")
     end_time: datetime | str | None = Field(None, description="End time of the run")
diff --git a/api/providers/trace/trace-weave/src/dify_trace_weave/entities/weave_trace_entity.py b/api/providers/trace/trace-weave/src/dify_trace_weave/entities/weave_trace_entity.py
index 98180c80a2c..f8a3e3723ce 100644
--- a/api/providers/trace/trace-weave/src/dify_trace_weave/entities/weave_trace_entity.py
+++ b/api/providers/trace/trace-weave/src/dify_trace_weave/entities/weave_trace_entity.py
@@ -1,5 +1,5 @@
 from collections.abc import Mapping
-from typing import Any, Union
+from typing import Any
 
 from pydantic import BaseModel, Field, field_validator
 from pydantic_core.core_schema import ValidationInfo
@@ -20,9 +20,9 @@ class WeaveMultiModel(BaseModel):
 class WeaveTraceModel(WeaveTokenUsage, WeaveMultiModel):
     id: str = Field(..., description="ID of the trace")
     op: str = Field(..., description="Name of the operation")
-    inputs: Union[str, Mapping[str, Any], list, None] | None = Field(None, description="Inputs of the trace")
-    outputs: Union[str, Mapping[str, Any], list, None] | None = Field(None, description="Outputs of the trace")
-    attributes: Union[str, dict[str, Any], list, None] | None = Field(
+    inputs: str | Mapping[str, Any] | list | None | None = Field(None, description="Inputs of the trace")
+    outputs: str | Mapping[str, Any] | list | None | None = Field(None, description="Outputs of the trace")
+    attributes: str | dict[str, Any] | list | None | None = Field(
         None, description="Metadata and attributes associated with trace"
     )
     exception: str | None = Field(None, description="Exception message of the trace")
diff --git a/api/providers/vdb/vdb-tencent/tests/integration_tests/conftest.py b/api/providers/vdb/vdb-tencent/tests/integration_tests/conftest.py
index 8f87d6a073b..39b20e8913e 100644
--- a/api/providers/vdb/vdb-tencent/tests/integration_tests/conftest.py
+++ b/api/providers/vdb/vdb-tencent/tests/integration_tests/conftest.py
@@ -1,5 +1,5 @@
 import os
-from typing import Any, Union
+from typing import Any
 
 import pytest
 from _pytest.monkeypatch import MonkeyPatch
@@ -100,7 +100,7 @@ class MockTcvectordbClass:
         self,
         database_name: str,
         collection_name: str,
-        documents: list[Union[Document, dict]],
+        documents: list[Document | dict],
         timeout: float | None = None,
         build_index: bool = True,
         **kwargs,
@@ -125,9 +125,9 @@ class MockTcvectordbClass:
         self,
         database_name: str,
         collection_name: str,
-        ann: Union[list[AnnSearch], AnnSearch] | None = None,
-        match: Union[list[KeywordSearch], KeywordSearch] | None = None,
-        filter: Union[Filter, str] | None = None,
+        ann: list[AnnSearch] | AnnSearch | None = None,
+        match: list[KeywordSearch] | KeywordSearch | None = None,
+        filter: Filter | str | None = None,
         rerank: Rerank | None = None,
         retrieve_vector: bool | None = None,
         output_fields: list[str] | None = None,
diff --git a/api/providers/vdb/vdb-vikingdb/tests/integration_tests/conftest.py b/api/providers/vdb/vdb-vikingdb/tests/integration_tests/conftest.py
index 289c515b858..34ddb94cc13 100644
--- a/api/providers/vdb/vdb-vikingdb/tests/integration_tests/conftest.py
+++ b/api/providers/vdb/vdb-vikingdb/tests/integration_tests/conftest.py
@@ -1,5 +1,4 @@
 import os
-from typing import Union
 from unittest.mock import MagicMock
 
 import pytest
@@ -120,10 +119,10 @@ class MockVikingDBClass:
         assert collection_name != ""
         assert index_name != ""
 
-    def upsert_data(self, data: Union[Data, list[Data]]):
+    def upsert_data(self, data: Data | list[Data]):
         assert data is not None
 
-    def fetch_data(self, id: Union[str, list[str], int, list[int]]):
+    def fetch_data(self, id: str | list[str] | int | list[int]):
         return Data(
             fields={
                 vdb_Field.GROUP_KEY: "test_group",
@@ -135,7 +134,7 @@ class MockVikingDBClass:
             id=id,
         )
 
-    def delete_data(self, id: Union[str, list[str], int, list[int]]):
+    def delete_data(self, id: str | list[str] | int | list[int]):
         assert id is not None
 
     def search_by_vector(
diff --git a/api/services/entities/external_knowledge_entities/external_knowledge_entities.py b/api/services/entities/external_knowledge_entities/external_knowledge_entities.py
index be4bd467731..ffb22b59ed0 100644
--- a/api/services/entities/external_knowledge_entities/external_knowledge_entities.py
+++ b/api/services/entities/external_knowledge_entities/external_knowledge_entities.py
@@ -1,12 +1,12 @@
-from typing import Any, Literal, Union
+from typing import Any, Literal
 
 from pydantic import BaseModel, Field
 
 
 class AuthorizationConfig(BaseModel):
     type: Literal[None, "basic", "bearer", "custom"]
-    api_key: Union[None, str] = None
-    header: Union[None, str] = None
+    api_key: None | str = None
+    header: None | str = None
 
 
 class Authorization(BaseModel):
diff --git a/api/services/snippet_generate_service.py b/api/services/snippet_generate_service.py
index eda98e892e5..86177f0112f 100644
--- a/api/services/snippet_generate_service.py
+++ b/api/services/snippet_generate_service.py
@@ -21,7 +21,7 @@ Supported execution modes:
 import json
 import logging
 from collections.abc import Generator, Mapping, Sequence
-from typing import Any, Union, cast
+from typing import Any, cast
 
 from sqlalchemy.orm import Session, make_transient, sessionmaker
 
@@ -131,7 +131,7 @@ class SnippetGenerateService:
     def generate(
         cls,
         snippet: CustomizedSnippet,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         args: Mapping[str, Any],
         invoke_from: InvokeFrom,
         streaming: bool = True,
@@ -183,7 +183,7 @@ class SnippetGenerateService:
     def run_published(
         cls,
         snippet: CustomizedSnippet,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         args: Mapping[str, Any],
         invoke_from: InvokeFrom,
         session_maker: sessionmaker[Session] | None = None,
@@ -372,7 +372,7 @@ class SnippetGenerateService:
     def generate_single_iteration(
         cls,
         snippet: CustomizedSnippet,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         node_id: str,
         args: Mapping[str, Any],
         streaming: bool = True,
@@ -419,7 +419,7 @@ class SnippetGenerateService:
     def generate_single_loop(
         cls,
         snippet: CustomizedSnippet,
-        user: Union[Account, EndUser],
+        user: Account | EndUser,
         node_id: str,
         args: Any,
         streaming: bool = True,
diff --git a/api/tasks/process_tenant_plugin_autoupgrade_check_task.py b/api/tasks/process_tenant_plugin_autoupgrade_check_task.py
index d50dc6b69ef..08846a2d48e 100644
--- a/api/tasks/process_tenant_plugin_autoupgrade_check_task.py
+++ b/api/tasks/process_tenant_plugin_autoupgrade_check_task.py
@@ -1,7 +1,6 @@
 import json
 import logging
 import operator
-import typing
 
 import click
 from celery import shared_task
@@ -27,7 +26,7 @@ CACHE_REDIS_KEY_PREFIX = "plugin_autoupgrade_check_task:cached_plugin_snapshot:"
 CACHE_REDIS_TTL = 60 * 60  # 1 hour
 
 # A cached miss is stored as JSON null, so None has to stay a valid payload.
-_CACHED_MANIFEST_ADAPTER = TypeAdapter(typing.Union[MarketplacePluginSnapshot, None])
+_CACHED_MANIFEST_ADAPTER = TypeAdapter(MarketplacePluginSnapshot | None)
 
 
 def _get_redis_cache_key(plugin_id: str) -> str:
@@ -35,7 +34,7 @@ def _get_redis_cache_key(plugin_id: str) -> str:
     return f"{CACHE_REDIS_KEY_PREFIX}{plugin_id}"
 
 
-def _get_cached_manifest(plugin_id: str) -> typing.Union[MarketplacePluginSnapshot, None, bool]:
+def _get_cached_manifest(plugin_id: str) -> MarketplacePluginSnapshot | None | bool:
     """
     Get cached plugin manifest from Redis.
     Returns:
diff --git a/api/tests/unit_tests/core/mcp/session/test_base_session.py b/api/tests/unit_tests/core/mcp/session/test_base_session.py
index f550ceef5fc..c4f57e60e99 100644
--- a/api/tests/unit_tests/core/mcp/session/test_base_session.py
+++ b/api/tests/unit_tests/core/mcp/session/test_base_session.py
@@ -4,7 +4,6 @@ import queue
 import time
 from concurrent.futures import Future, ThreadPoolExecutor
 from datetime import timedelta
-from typing import Union
 from unittest.mock import MagicMock, patch
 
 import pytest
@@ -54,11 +53,11 @@ class MockNotification(Notification[MockNotificationParams, str]):
     params: MockNotificationParams
 
 
-class ReceiveRequest(RootModel[Union[MockRequest, ClientRequest]]):
+class ReceiveRequest(RootModel[MockRequest | ClientRequest]):
     pass
 
 
-class ReceiveNotification(RootModel[Union[CancelledNotification, MockNotification, JSONRPCNotification]]):
+class ReceiveNotification(RootModel[CancelledNotification | MockNotification | JSONRPCNotification]):
     pass