diff --git a/api/core/workflow/nodes/agent/agent_node.py b/api/core/workflow/nodes/agent/agent_node.py
index 2ecde79876..9a02ff9b20 100644
--- a/api/core/workflow/nodes/agent/agent_node.py
+++ b/api/core/workflow/nodes/agent/agent_node.py
@@ -36,9 +36,9 @@ from core.workflow.node_events import (
     AgentLogEvent,
     NodeEventBase,
     NodeRunResult,
+    RunRetrieverResourceEvent,
     StreamChunkEvent,
     StreamCompletedEvent,
-    RunRetrieverResourceEvent,
 )
 from core.workflow.nodes.agent.entities import AgentNodeData, AgentOldVersionModelFeatures, ParamsAutoGenerated
 from core.workflow.nodes.base.entities import BaseNodeData, RetryConfig