diff --git a/package.json b/package.json
index 128aaec..3b59caa 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "fs-extra": "3.0.1",
     "html-webpack-plugin": "2.29.0",
     "jest": "20.0.4",
+    "mac-open": "^0.1.3",
     "node-schedule": "^1.3.1",
     "npm": "^6.5.0",
     "object-assign": "4.1.1",