diff --git a/package.json b/package.json
index 20f3eac..22f4a28 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "primus": "^2.4.12",
     "primus-emit": "^0.1.2",
     "primus-spark-latency": "^0.1.1",
-    "shelljs": "^0.3.0",
+    "shelljs": "^0.4.0",
     "ws": "^0.7.1"
   },
   "scripts": {