diff --git a/designer-base/src/main/java/com/fr/design/update/ui/dialog/UpdateMainDialog.java b/designer-base/src/main/java/com/fr/design/update/ui/dialog/UpdateMainDialog.java
index b71805802..78df599c5 100644
--- a/designer-base/src/main/java/com/fr/design/update/ui/dialog/UpdateMainDialog.java
+++ b/designer-base/src/main/java/com/fr/design/update/ui/dialog/UpdateMainDialog.java
@@ -30,7 +30,6 @@ import com.fr.general.http.HttpToolbox;
 import com.fr.json.JSONArray;
 import com.fr.json.JSONObject;
 import com.fr.log.FineLoggerFactory;
-import com.fr.process.ProcessEventPipe;
 import com.fr.process.engine.core.FineProcessContext;
 import com.fr.process.engine.core.FineProcessEngineEvent;
 import com.fr.stable.*;