diff --git a/presentations/immutability/plugin/multiplex/package.json b/presentations/immutability/plugin/multiplex/package.json
index 8718b20..75e785e 100644
--- a/presentations/immutability/plugin/multiplex/package.json
+++ b/presentations/immutability/plugin/multiplex/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "express": "~4.16.0",
     "grunt-cli": "~1.3.0",
-    "mustache": "~2.2.1",
+    "mustache": "~2.3.2",
     "socket.io": "~2.3.0"
   },
   "license": "MIT"