diff --git a/services/active-directory/terraform/infrastructure/activeDirectoryInstances.tf b/services/active-directory/terraform/infrastructure/activeDirectoryInstances.tf
index e2d73824..3109eed1 100644
--- a/services/active-directory/terraform/infrastructure/activeDirectoryInstances.tf
+++ b/services/active-directory/terraform/infrastructure/activeDirectoryInstances.tf
@@ -65,6 +65,7 @@ resource "azurerm_windows_virtual_machine" "active-directory-instance" {
   admin_username        = var.active-directory-username
   admin_password        = var.active-directory-password
   location              = azurerm_resource_group.active-directory-resource-group.location
+  patch_mode            = "AutomaticByPlatform"
   resource_group_name   = azurerm_resource_group.active-directory-resource-group.name
   network_interface_ids = [azurerm_network_interface.nic-instances[count.index].id]
   size                  = "Standard_DS2_v2"