diff --git a/api/tasks/rag_pipeline/priority_rag_pipeline_run_task.py b/api/tasks/rag_pipeline/priority_rag_pipeline_run_task.py
index 3c5e152520..d8fa73b42d 100644
--- a/api/tasks/rag_pipeline/priority_rag_pipeline_run_task.py
+++ b/api/tasks/rag_pipeline/priority_rag_pipeline_run_task.py
@@ -10,6 +10,7 @@ from typing import Any
 import click
 from celery import shared_task  # type: ignore
 from flask import current_app, g
+from sqlalchemy import select
 from sqlalchemy.orm import Session, sessionmaker
 
 from configs import dify_config
@@ -118,20 +119,20 @@ def run_single_rag_pipeline_task(rag_pipeline_invoke_entity: Mapping[str, Any],
 
             with Session(db.engine, expire_on_commit=False) as session:
                 # Load required entities
-                account = session.query(Account).where(Account.id == user_id).first()
+                account = session.scalar(select(Account).where(Account.id == user_id).limit(1))
                 if not account:
                     raise ValueError(f"Account {user_id} not found")
 
-                tenant = session.query(Tenant).where(Tenant.id == tenant_id).first()
+                tenant = session.scalar(select(Tenant).where(Tenant.id == tenant_id).limit(1))
                 if not tenant:
                     raise ValueError(f"Tenant {tenant_id} not found")
                 account.current_tenant = tenant
 
-                pipeline = session.query(Pipeline).where(Pipeline.id == pipeline_id).first()
+                pipeline = session.scalar(select(Pipeline).where(Pipeline.id == pipeline_id).limit(1))
                 if not pipeline:
                     raise ValueError(f"Pipeline {pipeline_id} not found")
 
-                workflow = session.query(Workflow).where(Workflow.id == pipeline.workflow_id).first()
+                workflow = session.scalar(select(Workflow).where(Workflow.id == pipeline.workflow_id).limit(1))
                 if not workflow:
                     raise ValueError(f"Workflow {pipeline.workflow_id} not found")
 
diff --git a/api/tasks/rag_pipeline/rag_pipeline_run_task.py b/api/tasks/rag_pipeline/rag_pipeline_run_task.py
index 52f66dddb8..db04b3375b 100644
--- a/api/tasks/rag_pipeline/rag_pipeline_run_task.py
+++ b/api/tasks/rag_pipeline/rag_pipeline_run_task.py
@@ -11,6 +11,7 @@ from typing import Any
 import click
 from celery import group, shared_task
 from flask import current_app, g
+from sqlalchemy import select
 from sqlalchemy.orm import Session, sessionmaker
 
 from configs import dify_config
@@ -132,20 +133,20 @@ def run_single_rag_pipeline_task(rag_pipeline_invoke_entity: Mapping[str, Any],
 
             with Session(db.engine) as session:
                 # Load required entities
-                account = session.query(Account).where(Account.id == user_id).first()
+                account = session.scalar(select(Account).where(Account.id == user_id).limit(1))
                 if not account:
                     raise ValueError(f"Account {user_id} not found")
 
-                tenant = session.query(Tenant).where(Tenant.id == tenant_id).first()
+                tenant = session.scalar(select(Tenant).where(Tenant.id == tenant_id).limit(1))
                 if not tenant:
                     raise ValueError(f"Tenant {tenant_id} not found")
                 account.current_tenant = tenant
 
-                pipeline = session.query(Pipeline).where(Pipeline.id == pipeline_id).first()
+                pipeline = session.scalar(select(Pipeline).where(Pipeline.id == pipeline_id).limit(1))
                 if not pipeline:
                     raise ValueError(f"Pipeline {pipeline_id} not found")
 
-                workflow = session.query(Workflow).where(Workflow.id == pipeline.workflow_id).first()
+                workflow = session.scalar(select(Workflow).where(Workflow.id == pipeline.workflow_id).limit(1))
                 if not workflow:
                     raise ValueError(f"Workflow {pipeline.workflow_id} not found")