diff --git a/package.json b/package.json
index 0ceec38..fb09c8a 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "body-parser": "^1.18.3",
     "dotenv": "^6.1.0",
-    "express": "^4.16.4",
+    "express": "^4.21.1",
     "nexmo": "^2.4.0"
   }
 }