diff --git a/app/models/doi.rb b/app/models/doi.rb
index 881352726..e6ec91466 100644
--- a/app/models/doi.rb
+++ b/app/models/doi.rb
@@ -600,6 +600,7 @@ def as_indexed_json(_options = {})
       "provider_id" => provider_id,
       "consortium_id" => consortium_id,
       "resource_type_id" => resource_type_id,
+      "person_id" => person_id,
       "client_id_and_name" => client_id_and_name,
       "provider_id_and_name" => provider_id_and_name,
       "resource_type_id_and_name" => resource_type_id_and_name,
@@ -668,6 +669,7 @@ def as_indexed_json(_options = {})
       "version_ids" => version_ids,
       "version_of_ids" => version_of_ids,
       "primary_title" => Array.wrap(primary_title),
+      "related_doi" => related_dois,
       "publisher_obj" => publisher,
     }
   end
diff --git a/app/models/doi/indexer/related_doi_indexer.rb b/app/models/doi/indexer/related_doi_indexer.rb
index eb97419d3..e81c049f7 100644
--- a/app/models/doi/indexer/related_doi_indexer.rb
+++ b/app/models/doi/indexer/related_doi_indexer.rb
@@ -3,12 +3,12 @@
 module Doi::Indexer
   class RelatedDoiIndexer
     def initialize(related_identifiers)
-      @related_identifiers = related_identifiers
+      @related_identifiers = Array.wrap(related_identifiers)
       @related_dois = nil
     end
 
     def related_dois
-      @related_dois ||= @related_identifiers.select { |r| r["relatedIdentifierType"] == "DOI" }
+      @related_dois ||= @related_identifiers.select { |r| r.fetch("relatedIdentifierType", nil) == "DOI" }
     end
 
     def related_grouped_by_id