diff --git a/2017-10-03_functional-full-stack-systems-with-elixir-phoenix-nerves-and-elm/package.json b/2017-10-03_functional-full-stack-systems-with-elixir-phoenix-nerves-and-elm/package.json
old mode 100755
new mode 100644
index eaec2b2..9129145
--- a/2017-10-03_functional-full-stack-systems-with-elixir-phoenix-nerves-and-elm/package.json
+++ b/2017-10-03_functional-full-stack-systems-with-elixir-phoenix-nerves-and-elm/package.json
@@ -37,7 +37,7 @@
     "grunt-retire": "~0.3.10",
     "grunt-zip": "~0.17.1",
     "mustache": "~2.2.1",
-    "node-sass": "~3.13.0",
+    "node-sass": "~4.14.1",
     "socket.io": "^1.4.8"
   },
   "license": "MIT"