diff --git a/_sass/responsive-nav.js-master/package.json b/_sass/responsive-nav.js-master/package.json
old mode 100755
new mode 100644
index cc30449..8eea489
--- a/_sass/responsive-nav.js-master/package.json
+++ b/_sass/responsive-nav.js-master/package.json
@@ -23,7 +23,7 @@
     "grunt-rigger": "~0.5.0",
     "grunt-contrib-watch": "~0.5.2",
     "grunt-contrib-uglify": "~0.2.2",
-    "express": "~3.3.5",
+    "express": "~4.17.1",
     "grunt-shell": "~0.3.1",
     "grunt-replace": "~0.4.4",
     "grunt-karma": "~0.6.1",