diff --git a/2019-7-16/package-lock.json b/2019-7-16/package-lock.json
index d96c09a..69c6b40 100644
--- a/2019-7-16/package-lock.json
+++ b/2019-7-16/package-lock.json
@@ -49,9 +49,9 @@
       }
     },
     "bson": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npm.taobao.org/bson/download/bson-1.1.1.tgz",
-      "integrity": "sha1-QzD16ZEExOdR5zUYWeLUCCefLxM="
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.6.tgz",
+      "integrity": "sha512-EvVNVeGo4tHxwi8L6bPj3y3itEvStdwvvlojVxxbyYfoaxJ6keLgrTuKdyfEAszFK+H3olzBuafE0yoh0D1gdg=="
     },
     "bytes": {
       "version": "3.1.0",