diff --git a/demo/yarn.lock b/demo/yarn.lock
index aa29fbf..1d5a6fd 100644
--- a/demo/yarn.lock
+++ b/demo/yarn.lock
@@ -4448,8 +4448,9 @@ lodash.uniq@^4.5.0:
   resolved "http://registry.npm.taobao.org/lodash.uniq/download/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
 lodash@^4.13.1, lodash@^4.17.10, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.3.0:
-  version "4.17.10"
-  resolved "http://registry.npm.taobao.org/lodash/download/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 log-symbols@^2.1.0, log-symbols@^2.2.0:
   version "2.2.0"