diff --git a/20170916/framework/reveal/3.4.1/package.json b/20170916/framework/reveal/3.4.1/package.json
index 1f866ea..db5ced4 100644
--- a/20170916/framework/reveal/3.4.1/package.json
+++ b/20170916/framework/reveal/3.4.1/package.json
@@ -39,7 +39,7 @@
     "grunt-sass": "~1.2.0",
     "grunt-retire": "~0.3.10",
     "grunt-zip": "~0.17.1",
-    "node-sass": "~3.13.0"
+    "node-sass": "~4.14.1"
   },
   "license": "MIT"
 }