diff --git a/internal/nodes/api_node.go b/internal/nodes/api_node.go
index e084e622..861feeb4 100644
--- a/internal/nodes/api_node.go
+++ b/internal/nodes/api_node.go
@@ -268,8 +268,8 @@ func (this *APINode) InstallSystemService() error {
 func (this *APINode) listenRPC(listener net.Listener, tlsConfig *tls.Config) error {
 	var rpcServer *grpc.Server
 	var options = []grpc.ServerOption{
-		grpc.MaxRecvMsgSize(128 * 1024 * 1024),
-		grpc.MaxSendMsgSize(128 * 1024 * 1024),
+		grpc.MaxRecvMsgSize(512 << 20),
+		grpc.MaxSendMsgSize(512 << 20),
 		grpc.UnaryInterceptor(this.unaryInterceptor),
 	}