diff --git a/rill-flow-interfaces/src/main/java/com/weibo/rill/flow/interfaces/model/task/BaseTask.java b/rill-flow-interfaces/src/main/java/com/weibo/rill/flow/interfaces/model/task/BaseTask.java
index 90b7326b..4ed508ef 100644
--- a/rill-flow-interfaces/src/main/java/com/weibo/rill/flow/interfaces/model/task/BaseTask.java
+++ b/rill-flow-interfaces/src/main/java/com/weibo/rill/flow/interfaces/model/task/BaseTask.java
@@ -16,7 +16,6 @@
 
 package com.weibo.rill.flow.interfaces.model.task;
 
-import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import com.weibo.rill.flow.interfaces.model.mapping.Mapping;
 import com.weibo.rill.flow.interfaces.model.strategy.Degrade;