diff --git a/front-end/q4/server/yarn.lock b/front-end/q4/server/yarn.lock
index 71902b1..f4f4d79 100644
--- a/front-end/q4/server/yarn.lock
+++ b/front-end/q4/server/yarn.lock
@@ -982,9 +982,9 @@ json5@^0.5.1:
   integrity sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=
 
 lodash@^4.17.4:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loose-envify@^1.0.0:
   version "1.4.0"