diff --git a/package.json b/package.json
index 3eed369..c24a365 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
   "homepage": "https://github.com/tpsjs/tps.js#readme",
   "dependencies": {
     "nonce": "^1.0.4",
-    "ws": "^1.1.1"
+    "ws": "^2.0.0"
   },
   "devDependencies": {
     "hook-std": "^0.2.0",