diff --git a/Gemfile.lock b/Gemfile.lock
index 0d26ec43..f8566628 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,10 @@ GEM
     bcrypt (3.1.20)
     bigdecimal (3.1.8)
     builder (3.3.0)
+    childprocess (5.1.0)
+      logger (~> 1.5)
     coderay (1.1.3)
-    concurrent-ruby (1.3.3)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crack (1.0.0)
       bigdecimal
@@ -51,11 +53,11 @@ GEM
     cube-ruby (0.0.3)
     daemons (1.4.1)
     date (3.3.4)
-    docile (1.4.0)
+    docile (1.4.1)
     domain_name (0.6.20240107)
-    email_spec (2.2.2)
+    email_spec (2.3.0)
       htmlentities (~> 4.3.3)
-      launchy (~> 2.1)
+      launchy (>= 2.1, < 4.0)
       mail (~> 2.7)
     eventmachine (1.2.7)
     faraday (1.10.3)
@@ -76,17 +78,17 @@ GEM
     faraday-httpclient (1.0.1)
     faraday-multipart (1.0.4)
       multipart-post (~> 2)
-    faraday-net_http (1.0.1)
+    faraday-net_http (1.0.2)
     faraday-net_http_persistent (1.2.0)
     faraday-patron (1.0.0)
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
     ffi (1.16.3)
-    hashdiff (1.1.0)
+    hashdiff (1.1.1)
     hashie (5.0.0)
     htmlentities (4.3.4)
     http-accept (1.7.0)
-    http-cookie (1.0.6)
+    http-cookie (1.0.7)
       domain_name (~> 0.5)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
@@ -94,14 +96,15 @@ GEM
     json-ld (3.0.2)
       multi_json (~> 1.12)
       rdf (>= 2.2.8, < 4.0)
-    jwt (2.8.2)
+    jwt (2.9.0)
       base64
     language_server-protocol (3.17.0.3)
-    launchy (2.5.2)
+    launchy (3.0.1)
       addressable (~> 2.8)
+      childprocess (~> 5.0)
     libxml-ruby (2.9.0)
     link_header (0.0.8)
-    logger (1.6.0)
+    logger (1.6.1)
     macaddr (1.7.2)
       systemu (~> 2.6.5)
     mail (2.8.1)
@@ -112,7 +115,7 @@ GEM
     method_source (1.1.0)
     mime-types (3.5.2)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2024.0604)
+    mime-types-data (3.2024.0903)
     mini_mime (1.1.5)
     minitest (4.7.5)
     minitest-reporters (0.14.24)
@@ -122,9 +125,9 @@ GEM
       powerbar
     multi_json (1.15.0)
     multipart-post (2.4.1)
-    net-http-persistent (4.0.2)
+    net-http-persistent (4.0.4)
       connection_pool (~> 2.2)
-    net-imap (0.4.14)
+    net-imap (0.4.16)
       date
       net-protocol
     net-pop (0.1.2)
@@ -134,12 +137,14 @@ GEM
     net-smtp (0.5.0)
       net-protocol
     netrc (0.11.0)
-    oj (3.16.4)
+    oj (3.16.6)
       bigdecimal (>= 3.0)
+      ostruct (>= 0.2)
     omni_logger (0.1.4)
       logger
-    parallel (1.25.1)
-    parser (3.3.3.0)
+    ostruct (0.6.0)
+    parallel (1.26.3)
+    parser (3.3.5.0)
       ast (~> 2.4.1)
       racc
     pony (1.13.1)
@@ -150,7 +155,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (5.1.1)
-    racc (1.8.0)
+    racc (1.8.1)
     rack (1.6.13)
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
@@ -171,7 +176,7 @@ GEM
     rdf-xsd (3.2.1)
       rdf (~> 3.2)
       rexml (~> 3.2)
-    redis (5.2.0)
+    redis (5.3.0)
       redis-client (>= 0.22.0)
     redis-client (0.22.2)
       connection_pool
@@ -183,22 +188,20 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.3.1)
-      strscan
+    rexml (3.3.7)
     rsolr (1.1.2)
       builder (>= 2.1.2)
-    rubocop (1.64.1)
+    rubocop (1.66.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
+      regexp_parser (>= 2.4, < 3.0)
+      rubocop-ast (>= 1.32.2, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.31.3)
+    rubocop-ast (1.32.3)
       parser (>= 3.3.1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
@@ -210,9 +213,8 @@ GEM
     simplecov-cobertura (2.1.0)
       rexml
       simplecov (~> 0.19)
-    simplecov-html (0.12.3)
+    simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    strscan (3.1.0)
     systemu (2.6.5)
     test-unit-minitest (0.9.1)
       minitest (~> 4.7)
@@ -223,7 +225,7 @@ GEM
     thread_safe (0.3.6)
     timeout (0.4.1)
     tzinfo (0.3.62)
-    unicode-display_width (2.5.0)
+    unicode-display_width (2.6.0)
     uuid (2.3.9)
       macaddr (~> 1.0)
     webmock (3.23.1)
diff --git a/lib/ontologies_linked_data/models/concerns/parse_diff_file.rb b/lib/ontologies_linked_data/models/concerns/parse_diff_file.rb
new file mode 100644
index 00000000..60b0cfa3
--- /dev/null
+++ b/lib/ontologies_linked_data/models/concerns/parse_diff_file.rb
@@ -0,0 +1,90 @@
+require 'libxml'
+
+module LinkedData
+  module Concerns
+    module SubmissionDiffParser
+
+      class DiffReport
+        attr_accessor :summary, :changed_classes, :new_classes, :deleted_classes
+
+        def initialize(summary, changed_classes, new_classes, deleted_classes)
+          @summary = summary
+          @changed_classes = changed_classes
+          @new_classes = new_classes
+          @deleted_classes = deleted_classes
+        end
+      end
+
+      class DiffSummary
+        attr_accessor :number_changed_classes, :number_new_classes, :number_deleted_classes
+
+        def initialize(number_changed_classes, number_new_classes, number_deleted_classes)
+          @number_changed_classes = number_changed_classes
+          @number_new_classes = number_new_classes
+          @number_deleted_classes = number_deleted_classes
+        end
+      end
+
+      class ChangedClass
+        attr_accessor :class_iri, :class_labels, :new_axioms, :new_annotations, :deleted_annotations, :deleted_axioms
+
+        def initialize(class_iri, class_labels, new_axioms, new_annotations, deleted_axioms, deleted_annotations)
+          @class_iri = class_iri
+          @class_labels = class_labels
+          @new_axioms = new_axioms
+          @deleted_axioms = deleted_axioms
+          @new_annotations = new_annotations
+          @deleted_annotations = deleted_annotations
+        end
+      end
+
+      class NewClass < ChangedClass; end
+
+      class DeletedClass < ChangedClass; end
+
+      def parse_diff_report(xml_file = self.diffFilePath)
+        parser = LibXML::XML::Parser.file(xml_file)
+        doc = parser.parse
+
+        # Parse summary
+        summary = doc.find_first('//diffSummary')
+        diff_summary = DiffSummary.new(
+          summary.find_first('numberChangedClasses').content.to_i,
+          summary.find_first('numberNewClasses').content.to_i,
+          summary.find_first('numberDeletedClasses').content.to_i
+        )
+
+        # Parse changed classes
+        changed_classes = doc.find('//changedClasses/changedClass').map do |node|
+          extract_changes_details ChangedClass, node
+        end
+
+        # Parse new classes
+        new_classes = doc.find('//newClasses/newClass').map do |node|
+          extract_changes_details NewClass, node
+        end
+
+        # Parse deleted classes
+        deleted_classes = doc.find('//deletedClasses/deletedClass').map do |node|
+          extract_changes_details DeletedClass, node
+        end
+
+        # Create the DiffReport object
+        DiffReport.new(diff_summary, changed_classes, new_classes, deleted_classes)
+      end
+
+      def extract_changes_details(klass, node)
+        class_iri = node.find_first('classIRI').content.strip
+        class_labels = node.find('classLabel').map(&:content)
+        new_axioms = node.find('newAxiom').map(&:content)
+        new_annotations = node.find('newAnnotation').map(&:content)
+        deleted_axioms = node.find('deletedAxiom').map(&:content)
+        deleted_annotations = node.find('deletedAnnotation').map(&:content)
+
+
+        klass.new(class_iri, class_labels, new_axioms, new_annotations, deleted_annotations, deleted_axioms)
+      end
+    end
+  end
+end
+
diff --git a/lib/ontologies_linked_data/models/ontology_submission.rb b/lib/ontologies_linked_data/models/ontology_submission.rb
index ce69e3e9..e13d8f20 100644
--- a/lib/ontologies_linked_data/models/ontology_submission.rb
+++ b/lib/ontologies_linked_data/models/ontology_submission.rb
@@ -16,11 +16,10 @@ class OntologySubmission < LinkedData::Models::Base
       include LinkedData::Concerns::OntologySubmission::Validators
       include LinkedData::Concerns::OntologySubmission::UpdateCallbacks
       extend LinkedData::Concerns::OntologySubmission::DefaultCallbacks
-
+      include LinkedData::Concerns::SubmissionDiffParser
       include SKOS::ConceptSchemes
       include SKOS::RootsFetcher
 
-
       FLAT_ROOTS_LIMIT = 1000
 
       model :ontology_submission, scheme: File.join(__dir__, '../../../config/schemes/ontology_submission.yml'),
@@ -125,7 +124,7 @@ class OntologySubmission < LinkedData::Models::Base
       attribute :openSearchDescription, namespace: :void, type: :uri, default: -> (s) { open_search_default(s) }
       attribute :source, namespace: :dct, type: :list
       attribute :endpoint, namespace: :sd, type: %i[uri list],
-                           default: ->(s) { default_sparql_endpoint(s)}
+                default: ->(s) { default_sparql_endpoint(s) }
       attribute :includedInDataCatalog, namespace: :schema, type: %i[list uri]
 
       # Relations
@@ -299,7 +298,7 @@ def self.clear_indexed_content(ontology)
         begin
           conn.delete_by_query("ontology_t:\"#{ontology}\"")
         rescue StandardError => e
-          #puts e.message
+          # puts e.message
         end
         conn
       end
@@ -479,9 +478,6 @@ def unzip_submission(logger)
         zip_dst
       end
 
-
-
-
       def class_count(logger = nil)
         logger ||= LinkedData::Parser.logger || Logger.new($stderr)
         count = -1
@@ -539,7 +535,6 @@ def metrics_from_file(logger = nil)
         metrics
       end
 
-
       def add_submission_status(status)
         valid = status.is_a?(LinkedData::Models::SubmissionStatus)
         raise ArgumentError, "The status being added is not SubmissionStatus object" unless valid