diff --git a/server/dump.go b/server/dump.go
index a29979a..1e76a03 100644
--- a/server/dump.go
+++ b/server/dump.go
@@ -7,6 +7,7 @@ import (
 	"local/dndex/storage/operator"
 	"net/http"
 
+	"github.com/google/uuid"
 	"gopkg.in/mgo.v2/bson"
 )
 
@@ -49,6 +50,9 @@ func (rest *REST) dumpIn(w http.ResponseWriter, r *http.Request) {
 	for namespace, ones := range request {
 		if namespace == scope.Namespace {
 			for _, one := range ones {
+				if one.ID == "" {
+					one.ID = uuid.New().String()
+				}
 				if err := rest.g.Insert(r.Context(), scope.Namespace, one); err != nil {
 					if err := rest.g.Update(r.Context(), scope.Namespace, bson.M{entity.ID: one.ID}, operator.SetMany{Value: one}); err != nil {
 						rest.respError(w, err)