diff --git a/package.json b/package.json
index c1c0d371a..886163c3a 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   },
   "dependencies": {
     "babel-runtime": "6.26.0",
-    "ws": "5.2.1",
+    "ws": "6.0.0",
     "xmlhttprequest": "1.8.0"
   },
   "devDependencies": {