diff --git a/metadef b/metadef
index 620e9b9..86781b7 160000
--- a/metadef
+++ b/metadef
@@ -1 +1 @@
-Subproject commit 620e9b9ac3210db3e4cf47babfb23d248bb9f17e
+Subproject commit 86781b7e8ce21d2b901406cc3619d6bea2aeb18e
diff --git a/parser/common/proto/insert_op.proto b/parser/common/proto/insert_op.proto
index af0edca..6c3287a 100644
--- a/parser/common/proto/insert_op.proto
+++ b/parser/common/proto/insert_op.proto
@@ -88,7 +88,6 @@ message AippOpParams {
 	int32 right_padding_size = 69;
 	int32 top_padding_size = 70;
 	int32 bottom_padding_size = 71;
-	float padding_value = 72;
 
 	int32 mean_chn_0 = 10;
 	int32 mean_chn_1 = 11;
diff --git a/parser/proto/insert_op.proto b/parser/proto/insert_op.proto
index af0edca..6c3287a 100644
--- a/parser/proto/insert_op.proto
+++ b/parser/proto/insert_op.proto
@@ -88,7 +88,6 @@ message AippOpParams {
 	int32 right_padding_size = 69;
 	int32 top_padding_size = 70;
 	int32 bottom_padding_size = 71;
-	float padding_value = 72;
 
 	int32 mean_chn_0 = 10;
 	int32 mean_chn_1 = 11;
diff --git a/parser/tensorflow/proto/insert_op.proto b/parser/tensorflow/proto/insert_op.proto
index af0edca..6c3287a 100644
--- a/parser/tensorflow/proto/insert_op.proto
+++ b/parser/tensorflow/proto/insert_op.proto
@@ -88,7 +88,6 @@ message AippOpParams {
 	int32 right_padding_size = 69;
 	int32 top_padding_size = 70;
 	int32 bottom_padding_size = 71;
-	float padding_value = 72;
 
 	int32 mean_chn_0 = 10;
 	int32 mean_chn_1 = 11;