diff --git a/package.json b/package.json
index 8281ef2..e99214f 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "grunt": "^1.0.1",
     "grunt-contrib-coffee": "^2.0.0",
     "grunt-mocha-test": "^0.13.2",
-    "grunt-shell-spawn": "^0.3.1",
+    "grunt-shell-spawn": "^0.4.0",
     "mocha": "^5.0.0",
     "mqtt": "^2.7.1"
   },