diff --git a/heroku/yarn.lock b/heroku/yarn.lock
index 0a82d93b..e5d6fd0b 100644
--- a/heroku/yarn.lock
+++ b/heroku/yarn.lock
@@ -4514,11 +4514,16 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@4.17.11, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0:
+lodash@4.17.11:
   version "4.17.11"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
   integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
 
+lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 log-chopper@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/log-chopper/-/log-chopper-1.0.2.tgz#a88da7a47a9f0e511eda4d5e1dc840e0eaf4547a"