diff --git a/samples/ts-demo/package-lock.json b/samples/ts-demo/package-lock.json
index 322ea63..b7023ce 100644
--- a/samples/ts-demo/package-lock.json
+++ b/samples/ts-demo/package-lock.json
@@ -1635,9 +1635,9 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npm.taobao.org/async/download/async-2.6.3.tgz",
-      "integrity": "sha1-1yYl4jRKNlbjo61Pp0n6gymdgv8=",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.14"