diff --git a/functions/package-lock.json b/functions/package-lock.json
index 65c051b..0f995a9 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -1360,9 +1360,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "lodash.at": {
       "version": "4.6.0",
diff --git a/functions/package.json b/functions/package.json
index 9077905..6f509a4 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "firebase-admin": "^8.6.0",
     "firebase-functions": "^3.3.0",
-    "lodash": "^4.17.15"
+    "lodash": "^4.17.21"
   },
   "devDependencies": {
     "@google-cloud/firestore": "^2.6.0",