diff --git a/app/controllers/dois_controller.rb b/app/controllers/dois_controller.rb
index da080f6e8..946f5f523 100644
--- a/app/controllers/dois_controller.rb
+++ b/app/controllers/dois_controller.rb
@@ -484,7 +484,7 @@ def safe_params
       :identifiers,
       { identifiers: [:identifier, :identifierType] },
       :relatedIdentifiers,
-      { relatedIdentifiers: [:relatedIdentifier, :relatedIdentifierType, :relationType, :resourceTypeGeneral, :relatedMetadataScheme, :schemeUri, :schemeType] },
+      { relatedIdentifiers: [:relatedIdentifier, :relatedIdentifierType, :relationType, relatedMetadataScheme, :schemeUri, :schemeType, :resourceTypeGeneral, :relatedMetadataScheme, :schemeUri, :schemeType] },
       :fundingReferences,
       { fundingReferences: [:funderName, :funderIdentifier, :funderIdentifierType, :awardNumber, :awardUri, :awardTitle] },
       :geoLocations,
diff --git a/app/models/activity.rb b/app/models/activity.rb
index 7907b3751..21c056d25 100644
--- a/app/models/activity.rb
+++ b/app/models/activity.rb
@@ -77,6 +77,9 @@ def after_audit
         relatedIdentifierType: { type: :keyword },
         relatedIdentifier: { type: :keyword },
         relationType: { type: :keyword },
+        relatedMetadataScheme: { type: :keyword },
+        schemeUri: { type: :keyword },
+        schemeType: { type: :keyword },
         resourceTypeGeneral: { type: :keyword }
       }},
       types: { type: :object, properties: {
diff --git a/app/models/doi.rb b/app/models/doi.rb
index 17bd0489d..3d8a764d2 100644
--- a/app/models/doi.rb
+++ b/app/models/doi.rb
@@ -161,6 +161,9 @@ class Doi < ActiveRecord::Base
       relatedIdentifierType: { type: :keyword },
       relatedIdentifier: { type: :keyword },
       relationType: { type: :keyword },
+      relatedMetadataScheme: { type: :keyword },
+      schemeUri: { type: :keyword },
+      schemeType: { type: :keyword },
       resourceTypeGeneral: { type: :keyword }
     }
     indexes :types,                          type: :object, properties: {