diff --git a/package.json b/package.json
index a5b8cd1873..22f7107e57 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,6 @@
     "mocha": "^1.21.3",
     "q": "^1.0.1",
     "request": "^2.39.0",
-    "z-schema": "^2.4.9"
+    "z-schema": "^4.2.4"
   }
 }