diff --git a/package.json b/package.json
index cd8b52e..c97ff2e 100644
--- a/package.json
+++ b/package.json
@@ -61,6 +61,6 @@
     "react": "15.0.1",
     "redux": "3.5.2",
     "react-dom": "15.0.1",
-    "express": "4.15.3"
+    "express": "4.21.0"
   }
 }