diff --git a/core/modules/media/src/Plugin/MediaStorageProxy/File.php b/core/modules/media/src/Plugin/media/Source/File.php
similarity index 89%
rename from core/modules/media/src/Plugin/MediaStorageProxy/File.php
rename to core/modules/media/src/Plugin/media/Source/File.php
index f573422495..e9290aa7fb 100644
--- a/core/modules/media/src/Plugin/MediaStorageProxy/File.php
+++ b/core/modules/media/src/Plugin/media/Source/File.php
@@ -1,35 +1,29 @@
 <?php
 
-namespace Drupal\media\Plugin\MediaStorageProxy;
+namespace Drupal\media\Plugin\media\Source;
 
 use Drupal\media\MediaInterface;
-use Drupal\media\MediaStorageProxyBase;
+use Drupal\media\MediaSourceBase;
 
 /**
- * File entity media storage proxy.
+ * File entity media source
  *
  * @see \Drupal\file\FileInterface
  *
- * @MediaStorageProxy(
+ * @MediaSource(
  *   id = "file",
  *   label = @Translation("File"),
  *   description = @Translation("Provides business logic and metadata for local files and documents."),
  *   allowed_field_types = {"file"},
+ *   default_thumbnail_filename = "generic.png"
  * )
  */
-class File extends MediaStorageProxyBase {
+class File extends MediaSourceBase {
 
   /**
    * {@inheritdoc}
    */
-  public function getConstraints() {
-    return [];
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getMetadataLabels() {
+  public function getMetadataAttributes() {
     return [
       'mime' => $this->t('MIME type'),
       'size' => $this->t('Size'),
diff --git a/core/profiles/standard/config/optional/media.type.file.yml b/core/profiles/standard/config/optional/media.type.file.yml
index ec38e0fd7e..109d801dd7 100644
--- a/core/profiles/standard/config/optional/media.type.file.yml
+++ b/core/profiles/standard/config/optional/media.type.file.yml
@@ -6,9 +6,9 @@ dependencies:
 id: file
 label: File
 description: 'Use the "File" media type for uploading local files.'
-handler: file
+source: file
 queue_thumbnail_downloads: false
 new_revision: false
-handler_configuration:
+source_configuration:
   source_field: field_media_file
 field_map: { }