diff --git a/package.json b/package.json
index 5e94011..465a21e 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   "keywords": [],
   "dependencies": {
     "formidable": "~1.0.11",
-    "express": "~3.1.0",
+    "express": "~4.17.1",
     "supertest": "~0.5.1"
   }
 }