diff --git a/demos/package-lock.json b/demos/package-lock.json
index 944a95f..4801de6 100644
--- a/demos/package-lock.json
+++ b/demos/package-lock.json
@@ -411,9 +411,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "version": "4.17.19",
+      "resolved": "https://registry.npm.taobao.org/lodash/download/lodash-4.17.19.tgz",
+      "integrity": "sha1-5I3e2+MLMyF4PFtDAfvTU7weSks=",
       "dev": true,
       "optional": true
     },