diff --git a/package.json b/package.json
index 106c563..727499f 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
         "grunt-sass": "2.0.0",
         "grunt-retire": "1.0.7",
         "grunt-zip": "~0.17.1",
-        "mustache": "2.3.0",
+        "mustache": "4.2.0",
         "socket.io": "1.7.3"
     },
     "license": "MIT"
diff --git a/plugin/multiplex/package.json b/plugin/multiplex/package.json
index bbed77a..e1ccc49 100644
--- a/plugin/multiplex/package.json
+++ b/plugin/multiplex/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "express": "~4.13.3",
     "grunt-cli": "~0.1.13",
-    "mustache": "~2.2.1",
+    "mustache": "~4.2.0",
     "socket.io": "~1.3.7"
   },
   "license": "MIT"