diff --git a/logging/package.json b/logging/package.json
index 53a125b670..aefbd71bae 100644
--- a/logging/package.json
+++ b/logging/package.json
@@ -14,6 +14,7 @@
     "export": "node export.js"
   },
   "dependencies": {
+    "async": "^1.5.2",
     "express": "^4.13.4",
     "fluent-logger": "^1.1.0",
     "gcloud": "^0.30.3"