diff --git a/package.json b/package.json
index ecf6978..a750b69 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "express": "^4.17.1",
     "googleapis": "^44.0.0",
     "jsonwebtoken": "^8.5.1",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "mongodb": "^3.3.3",
     "mongoose": "^5.7.7",
     "multer": "^1.4.2",
diff --git a/yarn.lock b/yarn.lock
index 3b2349d..31876ed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1353,10 +1353,10 @@ lodash.once@^4.0.0:
   resolved "https://registry.yarnpkg.com/lodash.once/-/lodash.once-4.1.1.tgz#0dd3971213c7c56df880977d504c88fb471a97ac"
   integrity sha1-DdOXEhPHxW34gJd9UEyI+0cal6w=
 
-lodash@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+lodash@^4.17.21:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 lowercase-keys@^1.0.0:
   version "1.0.1"