diff --git a/node/koa/yarn.lock b/node/koa/yarn.lock
index 8875ba3..10b4770 100644
--- a/node/koa/yarn.lock
+++ b/node/koa/yarn.lock
@@ -2719,9 +2719,9 @@ write-file-atomic@^3.0.0:
     typedarray-to-buffer "^3.1.5"
 
 ws@^7.2.3, ws@^7.4.4:
-  version "7.4.5"
-  resolved "http://r.npm.sankuai.com/ws/download/ws-7.4.5.tgz#a484dd851e9beb6fdb420027e3885e8ce48986c1"
-  integrity sha1-pITdhR6b62/bQgAn44hejOSJhsE=
+  version "7.4.6"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
+  integrity sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==
 
 xdg-basedir@^4.0.0:
   version "4.0.0"