diff --git a/functions/package.json b/functions/package.json
index cfca7c3..c92e4ca 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -17,7 +17,7 @@
     "@google-cloud/storage": "^5.0.0",
     "@paypal/checkout-server-sdk": "^1.0.1",
     "child-process-promise": "^2.2.1",
-    "express": "^4.17.1",
+    "express": "^4.21.0",
     "firebase-admin": "^9.0.0",
     "firebase-functions": "^3.5.0",
     "sharp": "^0.25.3",