diff --git a/.gitmodules b/.gitmodules
index 4b23427..70f56c6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "metadef"]
 	path = metadef
 	url = https://gitee.com/ascend/metadef.git
-	branch = master
+	branch = r1.7.0
diff --git a/OWNERS b/OWNERS
index 5ef4938..ee56699 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,8 +1,11 @@
 approvers:
 - ji_chen 
-- wqtshg
-- ljl0711
-- liu-jisheng
+- liyihan123
+- startzgf168
+- qkunz
 reviewers:
 - xchu42
 - sheng-nan
+- wqtshg
+- ljl0711
+- liu-jisheng
\ No newline at end of file