diff --git a/app/controllers/dois_controller.rb b/app/controllers/dois_controller.rb
index fac859e7c..7524c559a 100644
--- a/app/controllers/dois_controller.rb
+++ b/app/controllers/dois_controller.rb
@@ -378,7 +378,11 @@ def update
         @doi.assign_attributes(safe_params.slice(:client_id))
       else
         authorize! :update, @doi
-        @doi.assign_attributes(safe_params.except(:doi, :client_id))
+        if safe_params[:schema_version].blank?
+          @doi.assign_attributes(safe_params.except(:doi, :client_id).merge(schema_version: @doi[:schema_version] || LAST_SCHEMA_VERSION))
+        else
+          @doi.assign_attributes(safe_params.except(:doi, :client_id))
+        end
       end
     else
       doi_id = validate_doi(params[:id])
@@ -647,7 +651,7 @@ def safe_params
     meta = xml.present? ? parse_xml(xml, doi: p[:doi]) : {}
     p[:schemaVersion] = METADATA_FORMATS.include?(meta["from"]) ? LAST_SCHEMA_VERSION : p[:schemaVersion]
     xml = meta["string"]
-
+  
     # if metadata for DOIs from other registration agencies are not found
     fail ActiveRecord::RecordNotFound if meta["state"] == "not_found"
 
@@ -686,7 +690,7 @@ def safe_params
     p[:version_info] = p[:version] || meta["version_info"] if p.has_key?(:version) || meta["version_info"].present?
     # only update landing_page info if something is received via API to not overwrite existing data
     p.merge!(landing_page: p[:landingPage]) if p[:landingPage].present?
-
+    
     p.merge(
       regenerate: p[:regenerate] || regenerate
     ).except(
diff --git a/spec/requests/dois_spec.rb b/spec/requests/dois_spec.rb
index 85b1fdf93..b8d469d32 100644
--- a/spec/requests/dois_spec.rb
+++ b/spec/requests/dois_spec.rb
@@ -2859,6 +2859,55 @@
       # end
     end
 
+    context 'mds doi' do
+      let(:xml) { Base64.strict_encode64(file_fixture('datacite_schema_3.xml').read) }
+      let(:valid_attributes) do
+        {
+          "data" => {
+            "type" => "dois",
+            "attributes" => {
+              "url" => "http://www.bl.uk/pdf/patspec.pdf",
+              "should_validate" => "true",
+              "source" => "mds",
+              "event" => "publish"
+            }
+          }
+        }
+      end
+
+      let(:update_attributes) do
+        {
+          "data" => {
+            "type" => "dois",
+            "attributes" => {
+              "doi" => "10.14454/10703",
+              "should_validate" => "true",
+              "xml" => xml,
+              "source" => "mds",
+              "event" => "show"
+            }
+          }
+        }
+      end
+
+
+      it 'add metadata' do
+        puts "####FIRST ROUND"
+        put "/dois/10.14454/10703", update_attributes, headers
+
+        puts json
+        expect(json.dig('data', 'attributes', 'doi')).to eq("10.14454/10703")
+        expect(json.dig('data', 'attributes', 'schemaVersion')).to eq("http://datacite.org/schema/kernel-3")
+
+        puts "####SECOND ROUND"
+        put '/dois/10.14454/10703', valid_attributes, headers
+       
+        expect(json.dig('data', 'attributes', 'doi')).to eq("10.14454/10703")
+        expect(json.dig('data', 'attributes', 'schemaVersion')).to eq("http://datacite.org/schema/kernel-3")
+        expect(json.dig('data', 'attributes', 'titles')).to eq([{"title"=>"Data from: A new malaria agent in African hominids."}])
+      end
+    end
+
     context 'update rightsList' do
       let(:rights_list) { [{ "rights" => "Creative Commons Attribution 3.0", "rightsUri" => "http://creativecommons.org/licenses/by/3.0/", "lang" => "en"}] }
       let(:update_attributes) do