diff --git a/infra/deploy/cert/main.tf b/infra/deploy/cert/main.tf
index b7f06805..fb492ac2 100644
--- a/infra/deploy/cert/main.tf
+++ b/infra/deploy/cert/main.tf
@@ -2,11 +2,11 @@ terraform {
   required_providers {
     azurerm = {
       source  = "hashicorp/azurerm"
-      version = "3.1.0"
+      version = "4.1.0"
     }
   }
 
-  # backend "azurerm" {}
+  backend "azurerm" {}
 }
 
 data "azurerm_client_config" "current" {}