diff --git a/api/core/workflow/runtime/graph_runtime_state.py b/api/core/workflow/runtime/graph_runtime_state.py
index cd0602beb2..7641a989e0 100644
--- a/api/core/workflow/runtime/graph_runtime_state.py
+++ b/api/core/workflow/runtime/graph_runtime_state.py
@@ -12,7 +12,6 @@ from pydantic import BaseModel, Field
 from pydantic.json import pydantic_encoder
 
 from core.model_runtime.entities.llm_entities import LLMUsage
-from core.workflow.entities.pause_reason import PauseReason
 from core.workflow.enums import NodeExecutionType, NodeState, NodeType
 from core.workflow.runtime.variable_pool import VariablePool