diff --git a/lib/three/yarn.lock b/lib/three/yarn.lock
index a46866ca..6a3ea5f0 100644
--- a/lib/three/yarn.lock
+++ b/lib/three/yarn.lock
@@ -320,8 +320,8 @@ extend-shallow@^3.0.0, extend-shallow@^3.0.2:
     is-extendable "^1.0.1"
 
 extend@^3.0.0:
-  version "3.0.1"
-  resolved "http://registry.npm.taobao.org/extend/download/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
 
 extglob@^2.0.4:
   version "2.0.4"