diff --git a/oldto-site/yarn.lock b/oldto-site/yarn.lock
index 1850229..48c2b2b 100644
--- a/oldto-site/yarn.lock
+++ b/oldto-site/yarn.lock
@@ -2041,8 +2041,9 @@ lodash.findindex@^4.3.0:
   resolved "https://registry.yarnpkg.com/lodash.findindex/-/lodash.findindex-4.6.0.tgz#a3245dee61fb9b6e0624b535125624bb69c11106"
 
 lodash@^4.0.0, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.3.0:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 longest@^1.0.1:
   version "1.0.1"