diff --git a/package.json b/package.json
index 1ed1c87fb..826ef5926 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,7 @@
     "mocha": "2.5.1",
     "mock-spawn": "^0.2.6",
     "normalize-package-data": "^2.0.0",
+    "nsfw": "^1.0.15",
     "nslog": "^3",
     "oniguruma": "6.2.1",
     "pathwatcher": "7.1.0",