diff --git a/package.json b/package.json
index 497803e..7dee1ad 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "node": ">= 0.8.x"
   },
   "dependencies": {
-    "express": "4.x"
+    "express": "5.x"
   },
   "license": "apache 2.0"
 }