diff --git a/PublicComponent/src/main/java/com/arialyy/aria/core/group/AbsGroupLoaderUtil.java b/PublicComponent/src/main/java/com/arialyy/aria/core/group/AbsGroupLoaderUtil.java
index 520486e2..678de87d 100644
--- a/PublicComponent/src/main/java/com/arialyy/aria/core/group/AbsGroupLoaderUtil.java
+++ b/PublicComponent/src/main/java/com/arialyy/aria/core/group/AbsGroupLoaderUtil.java
@@ -97,6 +97,7 @@ public abstract class AbsGroupLoaderUtil implements IUtil {
       ALog.w(TAG, "启动组合任务失败，任务已停止或已取消");
       return;
     }
+    mListener.onPre();
 
     buildLoaderStructure();
     new Thread(mLoader).start();
diff --git a/README.md b/README.md
index ba457017..4f6306bb 100644
--- a/README.md
+++ b/README.md
@@ -155,6 +155,7 @@ protected void onCreate(Bundle savedInstanceState) {
 -keep class **$$DownloadListenerProxy{ *; }
 -keep class **$$UploadListenerProxy{ *; }
 -keep class **$$DownloadGroupListenerProxy{ *; }
+-keep class **$$DGSubListenerProxy{ *; }
 -keepclasseswithmembernames class * {
     @Download.* <methods>;
     @Upload.* <methods>;