diff --git a/spec/package.json b/spec/package.json
index 30fa048099..22d5c2fd02 100644
--- a/spec/package.json
+++ b/spec/package.json
@@ -10,6 +10,7 @@
     "chai-as-promised": "^7.1.1",
     "coffee-script": "1.12.7",
     "dbus-native": "^0.2.3",
+    "fs-extra": "^6.0.0",
     "graceful-fs": "^4.1.9",
     "mkdirp": "^0.5.1",
     "mocha": "^3.1.0",