diff --git a/html/yarn.lock b/html/yarn.lock
index 52365b53..0f6dd780 100644
--- a/html/yarn.lock
+++ b/html/yarn.lock
@@ -674,9 +674,9 @@ loader-utils@^1.2.3:
     json5 "^1.0.1"
 
 lodash@^4.0.0, lodash@^4.17.11, lodash@~4.17.10:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loud-rejection@^1.0.0:
   version "1.6.0"