diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 06aed9f9..a2d2088f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -15,15 +15,15 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Cache
-        uses: actions/cache@v2.1.3
+        uses: actions/cache@v4.2.0
         with:
           path: vendor/bundle
-          key: 2.7.2
+          key: 3.2
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@v1.159.0
+        uses: ruby/setup-ruby@v1.204.0
         with:
-          ruby-version: 2.7.2
+          ruby-version: 3.2
 
       - name: Install dependencies
         run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 95bb60af..5ed6c1f5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,13 +18,13 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Cache
-        uses: actions/cache@v2.1.3
+        uses: actions/cache@v4.2.0
         with:
           path: vendor/bundle
           key: ${{ matrix.ruby }}
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@v1.159.0
+        uses: ruby/setup-ruby@v1.204.0
         with:
           ruby-version: ${{ matrix.ruby }}
 
diff --git a/app/factories/bulkrax/object_factory.rb b/app/factories/bulkrax/object_factory.rb
index fa7430d7..5872fe12 100644
--- a/app/factories/bulkrax/object_factory.rb
+++ b/app/factories/bulkrax/object_factory.rb
@@ -165,7 +165,10 @@ def find_by_id
     end
 
     def delete(_user)
-      find&.delete(eradicate: true)
+      obj = find
+      return false unless obj
+
+      obj.delete(eradicate: true)
     end
 
     private
diff --git a/app/models/concerns/bulkrax/export_behavior.rb b/app/models/concerns/bulkrax/export_behavior.rb
index 4cfa8513..23a98f50 100644
--- a/app/models/concerns/bulkrax/export_behavior.rb
+++ b/app/models/concerns/bulkrax/export_behavior.rb
@@ -26,11 +26,15 @@ def hyrax_record
 
     # Prepend the file_set id to ensure a unique filename and also one that is not longer than 255 characters
     def filename(file_set)
-      # NOTE: Will this work with Valkyrie?
       return if file_set.original_file.blank?
-      fn = file_set.original_file.file_name.first
-      mime = ::Marcel::MimeType.for(file_set.original_file.mime_type)
-      ext_mime = ::Marcel::MimeType.for(file_set.original_file.file_name)
+      if file_set.original_file.respond_to?(:original_filename) # valkyrie
+        fn = file_set.original_file.original_filename
+        mime = ::Marcel::MimeType.for(file_set.original_file.file.io)
+      else # original non valkyrie version
+        fn = file_set.original_file.file_name.first
+        mime = ::Marcel::MimeType.for(declared_type: file_set.original_file.mime_type)
+      end
+      ext_mime = ::Marcel::MimeType.for(name: fn)
       if fn.include?(file_set.id) || importerexporter.metadata_only?
         filename = "#{fn}.#{mime.to_sym}"
         filename = fn if mime.to_s == ext_mime.to_s
diff --git a/app/parsers/bulkrax/csv_parser.rb b/app/parsers/bulkrax/csv_parser.rb
index 03159ebb..de695a08 100644
--- a/app/parsers/bulkrax/csv_parser.rb
+++ b/app/parsers/bulkrax/csv_parser.rb
@@ -244,7 +244,10 @@ def store_files(identifier, folder_count)
       record = Bulkrax.object_factory.find(identifier)
       return unless record
 
-      file_sets = record.file_set? ? Array.wrap(record) : record.file_sets
+      file_sets = Array.wrap(record) if record.file_set?
+      if file_sets.nil? # for valkyrie
+        file_sets = record.respond_to?(:file_sets) ? record.file_sets : record.members&.select(&:file_set?)
+      end
       file_sets << record.thumbnail if exporter.include_thumbnails && record.thumbnail.present? && record.work?
       file_sets.each do |fs|
         path = File.join(exporter_export_path, folder_count, 'files')
@@ -252,7 +255,7 @@ def store_files(identifier, folder_count)
         file = filename(fs)
         next if file.blank? || fs.original_file.blank?
 
-        io = open(fs.original_file.uri)
+        io = fs.original_file.respond_to?(:uri) ? open(fs.original_file.uri) : fs.original_file.file.io
         File.open(File.join(path, file), 'wb') do |f|
           f.write(io.read)
           f.close
diff --git a/app/parsers/bulkrax/parser_export_record_set.rb b/app/parsers/bulkrax/parser_export_record_set.rb
index 30262f94..f80d5c9b 100644
--- a/app/parsers/bulkrax/parser_export_record_set.rb
+++ b/app/parsers/bulkrax/parser_export_record_set.rb
@@ -173,7 +173,7 @@ def collections
       # @see https://github.com/samvera/hyrax/blob/64c0bbf0dc0d3e1b49f040b50ea70d177cc9d8f6/app/indexers/hyrax/work_indexer.rb#L15-L18
       def file_sets
         @file_sets ||= ParserExportRecordSet.in_batches(candidate_file_set_ids) do |batch_of_ids|
-          fsq = "has_model_ssim:#{Bulkrax.file_model_internal_resource} AND id:(\"" + batch_of_ids.join('" OR "') + "\")"
+          fsq = "has_model_ssim:\"#{Bulkrax.file_model_internal_resource.demodulize}\" AND id:(\"" + batch_of_ids.join('" OR "') + "\")"
           fsq += extra_filters if extra_filters.present?
           Bulkrax.object_factory.query(
             fsq,
diff --git a/bulkrax.gemspec b/bulkrax.gemspec
index a894131a..9e26f3fc 100644
--- a/bulkrax.gemspec
+++ b/bulkrax.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.files = Dir["{app,config,db,lib}/**/*", "LICENSE", "Rakefile", "README.md"]
 
   s.add_dependency 'rails', '>= 5.1.6'
-  s.add_dependency 'bagit', '~> 0.4.6'
+  s.add_dependency 'bagit', '~> 0.6.0'
   s.add_dependency 'coderay'
   s.add_dependency 'denormalize_fields'
   s.add_dependency 'marcel'
diff --git a/lib/bulkrax.rb b/lib/bulkrax.rb
index f6af63ee..1fd9a95f 100644
--- a/lib/bulkrax.rb
+++ b/lib/bulkrax.rb
@@ -92,7 +92,7 @@ def factory_class_name_coercer
     end
 
     def collection_model_class
-      @collection_model_class ||= Collection
+      @collection_model_class ||= Collection if defined?(::Hyrax)
     end
 
     attr_writer :collection_model_class