diff --git a/package.json b/package.json
index aa6b022..3bf6628 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,6 @@
   "dependencies": {
     "express": "^4.14.0",
     "express-ws": "^2.0.0",
-    "pm2": "^2.2.3"
+    "pm2": "^4.3.0"
   }
 }