diff --git a/bin/billing_monthly_cronjob b/bin/billing_monthly_cronjob
index fc804a9599bf2cd16b1c2a09aeceae567182408c..e088306097389ebf1be66ff785b10cc70686466c 100755
--- a/bin/billing_monthly_cronjob
+++ b/bin/billing_monthly_cronjob
@@ -27,7 +27,12 @@ CONFIG = Dhall.load(<<-DHALL).sync
 	in
 	(#{ARGV[0]}) : {
 		healthchecks_url: Text,
-		notify_using: { jid: Text, password: Text, target: Text -> Text },
+		notify_using: {
+			jid: Text,
+			password: Text,
+			target: Text -> Text,
+			body: Text -> Text -> Text
+		},
 		plans: List {
 			name: Text,
 			currency: Currency,