diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 62ca9ac..153b0ab
--- a/package.json
+++ b/package.json
@@ -26,6 +26,6 @@
     },
     "devDependencies": {
         "mocha": "0.14.0",
-        "ws": "0.4.21"
+        "ws": "7.2.0"
     }
 }