diff --git a/backend/yarn.lock b/backend/yarn.lock
index 11ba8b9..123fea7 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -226,9 +226,9 @@ brace-expansion@^1.1.7:
     concat-map "0.0.1"
 
 bson@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.npm.taobao.org/bson/download/bson-1.1.1.tgz#4330f5e99104c4e751e7351859e2d408279f2f13"
-  integrity sha1-QzD16ZEExOdR5zUYWeLUCCefLxM=
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/bson/-/bson-1.1.6.tgz#fb819be9a60cd677e0853aee4ca712a785d6618a"
+  integrity sha512-EvVNVeGo4tHxwi8L6bPj3y3itEvStdwvvlojVxxbyYfoaxJ6keLgrTuKdyfEAszFK+H3olzBuafE0yoh0D1gdg==
 
 buffer-equal-constant-time@1.0.1:
   version "1.0.1"