diff --git a/package.json b/package.json
index 8f1faac2..f382ce8c 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "config": "~0.4.35",
     "crypto": "0.0.3",
-    "express": "~3.5.1",
+    "express": "~4.21.1",
     "gulp-rename": "^1.2.0",
     "http-proxy": "~1.1.4",
     "js-yaml": "~3.0.2",