diff --git a/package.json b/package.json
index d18cb5bc..41b9eeed 100644
--- a/package.json
+++ b/package.json
@@ -71,6 +71,7 @@
     "mailgun": "^0.5.0",
     "mariadb": "^2.0.1-beta",
     "memcached": "^2.2.2",
+    "memory-fs": "^0.5.0",
     "mkdirp": "^1.0.4",
     "mongoose": "^5.3.12",
     "mysql": "^2.16.0",