diff --git a/package.json b/package.json
index 87c45c3..8429944 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "async": "2.6.2",
     "body-parser": "1.18.3",
-    "express": "4.16.3",
+    "express": "4.21.1",
     "morgan": "1.9.1",
     "mustache": "2.2.1",
     "portal-env": "file:../portal-env.tgz",