diff --git a/.rubocop.yml b/.rubocop.yml
index 8945eca..581ee2a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -11,7 +11,7 @@ Metrics/BlockLength:
     - "spec/**/*"
 
 Metrics/ClassLength:
-  Max: 102
+  Max: 105
 
 Naming/FileName:
   Exclude:
diff --git a/lib/carrierwave/storage/aws_file.rb b/lib/carrierwave/storage/aws_file.rb
index 192bb3b..478e4c3 100644
--- a/lib/carrierwave/storage/aws_file.rb
+++ b/lib/carrierwave/storage/aws_file.rb
@@ -58,7 +58,14 @@ def store(new_file)
         if new_file.is_a?(self.class)
           new_file.move_to(path)
         else
-          file.upload_file(new_file.path, aws_options.write_options(new_file))
+          if Aws::S3.const_defined?(:TransferManager)
+            options = aws_options.write_options(new_file).except(:body)
+            options[:multipart_threshold] = AWSOptions::MULTIPART_THRESHOLD
+            Aws::S3::TransferManager.new(client: connection.client).upload_file(new_file.path, bucket: bucket.name,
+                                                                                               key: path, **options)
+          else
+            file.upload_file(new_file.path, aws_options.write_options(new_file))
+          end
         end
       end
 
diff --git a/spec/carrierwave/storage/aws_file_spec.rb b/spec/carrierwave/storage/aws_file_spec.rb
index 680ed34..19582ed 100644
--- a/spec/carrierwave/storage/aws_file_spec.rb
+++ b/spec/carrierwave/storage/aws_file_spec.rb
@@ -141,9 +141,24 @@
         CarrierWave::SanitizedFile.new('spec/fixtures/image.png')
       end
 
-      it 'uploads the file using with multipart support' do
-        expect(file).to(receive(:upload_file)
-                              .with(new_file.path, an_instance_of(Hash)))
+      it 'uploads the file using TransferManager' do
+        transfer_manager = instance_double('Aws::S3::TransferManager')
+        client = instance_double('Aws::S3::Client')
+
+        allow(bucket).to receive(:name).and_return('example-com')
+        allow(connection).to receive(:client).and_return(client)
+        allow(Aws::S3::TransferManager).to receive(:new).with(client: client).and_return(transfer_manager)
+
+        expect(transfer_manager).to receive(:upload_file).with(
+          new_file.path,
+          bucket: 'example-com',
+          key: path,
+          acl: :'public-read',
+          content_type: new_file.content_type,
+          encryption_key: 'def',
+          multipart_threshold: CarrierWave::Storage::AWSOptions::MULTIPART_THRESHOLD
+        )
+
         aws_file.store(new_file)
       end
     end