diff --git a/src/Tasks/SubsiteMigrateFileTask.php b/src/Tasks/SubsiteMigrateFileTask.php
index c00c7764..2904b807 100644
--- a/src/Tasks/SubsiteMigrateFileTask.php
+++ b/src/Tasks/SubsiteMigrateFileTask.php
@@ -4,9 +4,25 @@
 
 use SilverStripe\Dev\Tasks\MigrateFileTask;
 use SilverStripe\Subsites\Model\Subsite;
+use SilverStripe\Dev\Deprecation;
 
+/**
+ * @deprecated 2.8.0 Will be removed without equivalent functionality to replace it
+ */
 class SubsiteMigrateFileTask extends MigrateFileTask
 {
+    public function __construct()
+    {
+        Deprecation::withNoReplacement(function () {
+            Deprecation::notice(
+                '2.8.0',
+                'Will be removed without equivalent functionality to replace it',
+                Deprecation::SCOPE_CLASS
+            );
+        });
+        parent::__construct();
+    }
+
     public function run($request)
     {
         $origDisableSubsiteFilter = Subsite::$disable_subsite_filter;