diff --git a/views/ngXosViews/diagnostic/package.json b/views/ngXosViews/diagnostic/package.json
index d7694bc..e5437b9 100644
--- a/views/ngXosViews/diagnostic/package.json
+++ b/views/ngXosViews/diagnostic/package.json
@@ -42,6 +42,7 @@
     "gulp-postcss": "^6.0.1",
     "gulp-rename": "^1.2.2",
     "gulp-replace": "^0.5.4",
+    "gulp-sass": "^2.2.0",
     "gulp-uglify": "^1.4.2",
     "http-proxy": "^1.12.0",
     "ink-docstrap": "^0.5.2",