diff --git a/object/filters.go b/object/filters.go
index 5eee13b..9fe024d 100644
--- a/object/filters.go
+++ b/object/filters.go
@@ -36,6 +36,9 @@ const (
 
 	// FilterHeaderSplitID is a filter key to "split.splitID" field of the object header.
 	FilterHeaderSplitID = ReservedFilterPrefix + "split.splitID"
+
+	// FilterHeaderECParent is a filter key to "ec.parent" field of the object header.
+	FilterHeaderECParent = ReservedFilterPrefix + "ec.parent"
 )
 
 const (
diff --git a/object/grpc/service.pb.go b/object/grpc/service.pb.go
index 2bfb50b..75d359e 100644
Binary files a/object/grpc/service.pb.go and b/object/grpc/service.pb.go differ