diff --git a/module/instance/model.php b/module/instance/model.php
index 1768fa9350..7d7aba08ec 100644
--- a/module/instance/model.php
+++ b/module/instance/model.php
@@ -371,7 +371,7 @@ class instanceModel extends model
      */
     public function updateByID(int $id, object|array $newInstance)
     {
-        return $this->dao->update(TABLE_INSTANCE)->data($newInstance, 'memory_kb,cpu')
+        return $this->dao->update(TABLE_INSTANCE)->data($newInstance, 'memory_kb,cpu,disk_gb')
             ->autoCheck()
             ->checkIF(isset($newInstance->name), 'name', 'notempty')
             ->checkIF(isset($newInstance->status), 'status', 'in', array_keys($this->lang->instance->statusList))