diff --git a/src/Drush/Commands/UpdateDrushCommands.php b/src/Drush/Commands/UpdateDrushCommands.php
index 3e63c55..7638f7b 100644
--- a/src/Drush/Commands/UpdateDrushCommands.php
+++ b/src/Drush/Commands/UpdateDrushCommands.php
@@ -237,7 +237,9 @@ private function updateDefaultFiles(UpdateOptions $options) : self {
         'public/sites/default/azure.settings.php',
         'public/sites/default/settings.php',
         'docker/openshift/custom.locations',
+        'docker/openshift/init.sh',
         'docker/openshift/Dockerfile',
+        'docker/openshift/entrypoints/10-preflight.sh',
         'docker/openshift/entrypoints/20-deploy.sh',
         'docker/openshift/crons/content-scheduler.sh',
         'docker/openshift/crons/migrate-status.php',
@@ -246,6 +248,7 @@ private function updateDefaultFiles(UpdateOptions $options) : self {
         'docker/openshift/crons/purge-queue.sh',
         'docker/openshift/crons/update-translations.sh',
         'docker/openshift/crons/pubsub.sh',
+        'docker/openshift/preflight/preflight.php',
         'docker/openshift/notify.php',
         'docker-compose.yml',
         'phpunit.xml.dist',
diff --git a/src/Update/migrations.php b/src/Update/migrations.php
index dca9f44..0216289 100644
--- a/src/Update/migrations.php
+++ b/src/Update/migrations.php
@@ -105,3 +105,13 @@ function drupal_tools_update_3() : UpdateResult {
   }
   return new UpdateResult(['Attempted to install: ' . implode(' ', $packages)]);
 }
+
+/**
+ * Remove leftover files.
+ */
+function drupal_tools_update_4(UpdateOptions $options, FileManager $fileManager) : UpdateResult {
+  $fileManager->removeFiles($options, [
+    'docker/openshift/crons/migrate-status.php',
+  ]);
+  return new UpdateResult(['Attempted to remove migrate-status.php file.']);
+}