diff --git a/samples/serverless/functions/package-lock.json b/samples/serverless/functions/package-lock.json
index 057f8f2..120e749 100644
--- a/samples/serverless/functions/package-lock.json
+++ b/samples/serverless/functions/package-lock.json
@@ -725,9 +725,9 @@
       }
     },
     "firebase-functions": {
-      "version": "3.15.2",
-      "resolved": "https://registry.npmjs.org/firebase-functions/-/firebase-functions-3.15.2.tgz",
-      "integrity": "sha512-Dgg/Jp7RYxIEvysnV0pmsVwyBgXXCPQJakCwMXWQUiA5HivnTL+p2A3Mo4n9TnwaD226jNEISbNjuQq9DIrFOQ==",
+      "version": "3.15.4",
+      "resolved": "https://registry.npmjs.org/firebase-functions/-/firebase-functions-3.15.4.tgz",
+      "integrity": "sha512-6Zq+QIqdslZLsSwWg25Hv39cgFBZr0oUAbCjfe/MXqSHMy8ZK/1Vdy/WKx5IRC6hE7+JrmfVylIyEonTyNcheA==",
       "requires": {
         "@types/cors": "^2.8.5",
         "@types/express": "4.17.3",
diff --git a/samples/serverless/functions/package.json b/samples/serverless/functions/package.json
index 81c3267..dfa2bbf 100644
--- a/samples/serverless/functions/package.json
+++ b/samples/serverless/functions/package.json
@@ -3,7 +3,7 @@
   "description": "WFH-Excuses serverless implementation using Firebase Cloud Functions",
   "dependencies": {
     "firebase-admin": "~9.4.2",
-    "firebase-functions": "^3.15.2",
+    "firebase-functions": "^3.15.4",
     "wfh-excuses": "^1.0.5"
   },
   "private": true