diff --git a/grpc/pb/bdware/bdledger/api/common.proto b/grpc/pb/bdware/bdledger/api/common.proto
index dbb43a5..f43acc1 100644
--- a/grpc/pb/bdware/bdledger/api/common.proto
+++ b/grpc/pb/bdware/bdledger/api/common.proto
@@ -4,6 +4,7 @@ package bdware.bdledger.api;
 
 option go_package = "bdware.org/bdledger/pkg/api/grpc/pb;apipb";
 option java_package = "org.bdware.bdledger.api.grpc.pb";
+option java_outer_classname = "CommonProto";
 
 /* 事务类型 */
 enum TransactionType {
diff --git a/grpc/pb/bdware/bdledger/api/error_details.proto b/grpc/pb/bdware/bdledger/api/error_details.proto
index 3cdae60..3e10060 100644
--- a/grpc/pb/bdware/bdledger/api/error_details.proto
+++ b/grpc/pb/bdware/bdledger/api/error_details.proto
@@ -4,6 +4,7 @@ package bdware.bdledger.api;
 
 option go_package = "bdware.org/bdledger/pkg/api/grpc/pb;apipb";
 option java_package = "org.bdware.bdledger.api.grpc.pb";
+option java_outer_classname = "ErrorDetailsProto";
 
 // InvalidArgument indicates client specified an invalid argument.
 // Note that this differs from FailedPrecondition. It indicates arguments
diff --git a/grpc/pb/bdware/bdledger/api/ledger.proto b/grpc/pb/bdware/bdledger/api/ledger.proto
index 331719c..d2b1d5d 100644
--- a/grpc/pb/bdware/bdledger/api/ledger.proto
+++ b/grpc/pb/bdware/bdledger/api/ledger.proto
@@ -7,6 +7,7 @@ import "bdware/bdledger/api/common.proto";
 
 option go_package = "bdware.org/bdledger/pkg/api/grpc/pb;apipb";
 option java_package = "org.bdware.bdledger.api.grpc.pb";
+option java_outer_classname = "LedgerProto";
 
 service Ledger {
   /**
diff --git a/grpc/pb/bdware/bdledger/api/node.proto b/grpc/pb/bdware/bdledger/api/node.proto
index 9030abf..6d49bce 100644
--- a/grpc/pb/bdware/bdledger/api/node.proto
+++ b/grpc/pb/bdware/bdledger/api/node.proto
@@ -6,6 +6,7 @@ import "google/protobuf/empty.proto";
 
 option go_package = "bdware.org/bdledger/pkg/api/grpc/pb;apipb";
 option java_package = "org.bdware.bdledger.api.grpc.pb";
+option java_outer_classname = "NodeProto";
 
 service Node {
   /**
diff --git a/grpc/pb/bdware/bdledger/api/query.proto b/grpc/pb/bdware/bdledger/api/query.proto
index fdc4677..938de09 100644
--- a/grpc/pb/bdware/bdledger/api/query.proto
+++ b/grpc/pb/bdware/bdledger/api/query.proto
@@ -6,6 +6,7 @@ import "bdware/bdledger/api/common.proto";
 
 option go_package = "bdware.org/bdledger/pkg/api/grpc/pb;apipb";
 option java_package = "org.bdware.bdledger.api.grpc.pb";
+option java_outer_classname = "QueryProto";
 
 service Query {
   /**