diff --git a/content/static/tutorial/util/reveal/package.json b/content/static/tutorial/util/reveal/package.json
index c2e6d3d..c226c7c 100644
--- a/content/static/tutorial/util/reveal/package.json
+++ b/content/static/tutorial/util/reveal/package.json
@@ -23,7 +23,7 @@
   "dependencies": {
     "underscore": "~1.3.3",
     "express": "~2.5.9",
-    "mustache": "~0.4.0",
+    "mustache": "~4.0.1",
     "socket.io": "~0.9.13"
   },
   "devDependencies": {