diff --git a/basics/slides/themes/hugo-theme-pivotal-revealjs/static/plugin/multiplex/package.json b/basics/slides/themes/hugo-theme-pivotal-revealjs/static/plugin/multiplex/package.json
index bbed77a..0eb0e48 100644
--- a/basics/slides/themes/hugo-theme-pivotal-revealjs/static/plugin/multiplex/package.json
+++ b/basics/slides/themes/hugo-theme-pivotal-revealjs/static/plugin/multiplex/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "express": "~4.13.3",
     "grunt-cli": "~0.1.13",
-    "mustache": "~2.2.1",
+    "mustache": "~2.3.2",
     "socket.io": "~1.3.7"
   },
   "license": "MIT"