diff --git a/package.json b/package.json
index 17773ac..04cbb14 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "express": "^4.13.4",
     "express-static-gzip": "^1.1.3",
     "front-matter": "^2.2.0",
+    "js-yaml": "^3.13.1",
     "jsonfile": "^4.0.0",
     "lodash": "^4.17.13",
     "markdown-it": "^8.4.2",