diff --git a/server/federation/helpers.js b/server/federation/helpers.js
index ca257eee..7d8f1c3f 100644
--- a/server/federation/helpers.js
+++ b/server/federation/helpers.js
@@ -1,5 +1,6 @@
 const fetch = require('fetch')
 const request = require('request')
+const crypto = require('crypto')
 const config = require('config')
 
 const Helpers = {