diff --git a/proto/milvus.proto b/proto/milvus.proto
index a65da0a..61db5f2 100644
--- a/proto/milvus.proto
+++ b/proto/milvus.proto
@@ -136,6 +136,8 @@ service MilvusService {
   rpc DescribeDatabase(DescribeDatabaseRequest) returns (DescribeDatabaseResponse) {}
 
   rpc ReplicateMessage(ReplicateMessageRequest) returns (ReplicateMessageResponse) {}
+
+  rpc UpdateBlobBucketInfo(UpdateBlobBucketInfoRequest) returns (common.Status) {}
 }
 
 message CreateAliasRequest {
@@ -1871,6 +1873,12 @@ message ReplicateMessageResponse {
   string position = 2;
 }
 
+message UpdateBlobBucketInfoRequest {
+  common.MsgBase base = 1;
+  string bucket = 2;
+  string auth_key = 3;
+}
+
 message ImportAuthPlaceholder {
   option (common.privilege_ext_obj) = {
     object_type: Collection
diff --git a/proto/schema.proto b/proto/schema.proto
index 1f7dca6..ef498f8 100644
--- a/proto/schema.proto
+++ b/proto/schema.proto
@@ -102,6 +102,12 @@ message ArrayArray {
 
 message JSONArray { repeated bytes data = 1; }
 
+message BlobFile {
+  string source_uri = 1;
+}
+
+message BlobArray {repeated BlobFile data = 1;}
+
 message ValueField {
   oneof data {
     bool bool_data = 1;
@@ -125,6 +131,7 @@ message ScalarField {
     BytesArray bytes_data = 7;
     ArrayArray array_data = 8;
     JSONArray json_data = 9;
+    BlobArray blob_data = 10;
   }
 }