diff --git a/group.post_update.php b/group.post_update.php
index fa0f28e..ef6962d 100644
--- a/group.post_update.php
+++ b/group.post_update.php
@@ -7,6 +7,7 @@
 
 use Drupal\group\Entity\GroupType;
 use Drupal\group\Entity\GroupContentType;
+use Drupal\Core\Config\InstallStorage;
 use Drupal\user\Entity\Role;
 
 /**