diff --git a/schema.graphql b/schema.graphql
index 7aff3eaf..86f6f8c6 100644
--- a/schema.graphql
+++ b/schema.graphql
@@ -56,6 +56,7 @@ type Author {
     stat: AuthorStat
     roles: [Role]  # in different communities
     lastSeen: DateTime
+    createdAt: DateTime
 }
 
 type Result {