diff --git a/package.json b/package.json
index 106c563..421201c 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
         "node": ">=4.0.0"
     },
     "devDependencies": {
-        "express": "4.16.2",
+        "express": "4.18.3",
         "grunt": "1.0.1",
         "grunt-autoprefixer": "3.0.4",
         "grunt-cli": "1.2.0",
diff --git a/plugin/multiplex/package.json b/plugin/multiplex/package.json
index bbed77a..71cc308 100644
--- a/plugin/multiplex/package.json
+++ b/plugin/multiplex/package.json
@@ -10,7 +10,7 @@
     "node": "~4.1.1"
   },
   "dependencies": {
-    "express": "~4.13.3",
+    "express": "~4.18.0",
     "grunt-cli": "~0.1.13",
     "mustache": "~2.2.1",
     "socket.io": "~1.3.7"