diff --git a/app/models/whois_record.rb b/app/models/whois_record.rb
index d6b61d81..2ce6427c 100644
--- a/app/models/whois_record.rb
+++ b/app/models/whois_record.rb
@@ -48,7 +48,7 @@ def deserialize_domain
                expire: json['expire'],
                outzone: json['outzone'],
                delete: json['delete'],
-               registration_deadline: json['registration_deadline'])
+               registration_deadline: json['registration_deadline'].try(:to_s, :iso8601))
   end
   # rubocop:enable Metrics/AbcSize