diff --git a/package.json b/package.json
index 883a966..a09c0b5 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "expect.js": ">=0.0.1",
     "sinon": ">=0.0.1",
     "supertest": ">=0.0.1",
-    "express": "3.4.7",
+    "express": "4.17.1",
     "jade": ">=0.0.1",
     "benchmark": ">=0.0.1",
     "microtime": ">=0.0.1"