diff --git a/.terraform.lock.hcl b/.terraform.lock.hcl
new file mode 100644
index 0000000..21a7bfe
--- /dev/null
+++ b/.terraform.lock.hcl
@@ -0,0 +1,45 @@
+# This file is maintained automatically by "terraform init".
+# Manual edits may be lost in future updates.
+
+provider "registry.terraform.io/hashicorp/random" {
+  version     = "3.6.3"
+  constraints = "3.6.3"
+  hashes = [
+    "h1:zG9uFP8l9u+yGZZvi5Te7PV62j50azpgwPunq2vTm1E=",
+    "zh:04ceb65210251339f07cd4611885d242cd4d0c7306e86dda9785396807c00451",
+    "zh:448f56199f3e99ff75d5c0afacae867ee795e4dfda6cb5f8e3b2a72ec3583dd8",
+    "zh:4b4c11ccfba7319e901df2dac836b1ae8f12185e37249e8d870ee10bb87a13fe",
+    "zh:4fa45c44c0de582c2edb8a2e054f55124520c16a39b2dfc0355929063b6395b1",
+    "zh:588508280501a06259e023b0695f6a18149a3816d259655c424d068982cbdd36",
+    "zh:737c4d99a87d2a4d1ac0a54a73d2cb62974ccb2edbd234f333abd079a32ebc9e",
+    "zh:78d5eefdd9e494defcb3c68d282b8f96630502cac21d1ea161f53cfe9bb483b3",
+    "zh:a357ab512e5ebc6d1fda1382503109766e21bbfdfaa9ccda43d313c122069b30",
+    "zh:c51bfb15e7d52cc1a2eaec2a903ac2aff15d162c172b1b4c17675190e8147615",
+    "zh:e0951ee6fa9df90433728b96381fb867e3db98f66f735e0c3e24f8f16903f0ad",
+    "zh:e3cdcb4e73740621dabd82ee6a37d6cfce7fee2a03d8074df65086760f5cf556",
+    "zh:eff58323099f1bd9a0bec7cb04f717e7f1b2774c7d612bf7581797e1622613a0",
+  ]
+}
+
+provider "registry.terraform.io/stackitcloud/stackit" {
+  version     = "0.69.0"
+  constraints = "0.69.0"
+  hashes = [
+    "h1:ZJT3yMWfm4f2+L8XOJlp4x9dAej6TOz0POQi6yvRimc=",
+    "zh:0062c29953695943f44561264542c65050c35b45fc5fd279d07db40a856c7e33",
+    "zh:01f74068286ebbb9e7a280e893b6a941214444986ec0aad156b0a349ab3efbab",
+    "zh:0dde99e7b343fa01f8eefc378171fb8621bedb20f59157d6cc8e3d46c738105f",
+    "zh:23f695fc9299cbdff0cef3e99eccdfd6dbc85266d71f9e7eb917066821f97b2d",
+    "zh:2cb58760e26de6afc93b26452e1987eca0713ecca5a252e3baf4b6a9adce5ab0",
+    "zh:33b72f438dccbbba5015bd3e265db83fa69f693f5e93cfaf1735bcfd92f2198b",
+    "zh:4d22147d5881b6ea824ca11d8676dd3c24b378a87e72d849485d87c412d57c0d",
+    "zh:7373e3036eee52c5d915992bcd42df3227603714e9b814d1f8513e0891b87a54",
+    "zh:7ea4ad058e2767d7461c4b0cc02adf8591f0c3541274481611ca7c8bc4396f9d",
+    "zh:82e2568b28874ded800a592b84e6cd570a2f3488214422041a41918076a2db49",
+    "zh:ae2d827c2328c225d279e37f6e1de2605b670b2f1bddf5d43e7c932ef4ff52a3",
+    "zh:b206487c97f87f0cde19ef0ab1cfdeafa60ad9fbabdf0d771d96bb56d6d2e94f",
+    "zh:bdbbe0ba3b3b80b0f2bc09b59ea72f9564f9b93d80949f69f6469b0ab8d6b91c",
+    "zh:c955889cbb87227031233b2226ebe591e4a30699e3f0fc9f32b61ff2c3836dd7",
+    "zh:cf51867c75f3c0b58a2e8a2404d4468d0520588aa892c3b30e5beb8a8d20ce79",
+  ]
+}
diff --git a/00-backend.tf b/00-backend.tf
index 1170dda..831a30b 100644
--- a/00-backend.tf
+++ b/00-backend.tf
@@ -1,3 +1,9 @@
+/*Copyright 2025 STACKIT GmbH & Co. KG <maintainer.email@stackit.cloud>
+
+Use of this source code is governed by an MIT-style
+license that can be found in the LICENSE file or at
+https://opensource.org/licenses/MIT.*/
+
 /*terraform {
   backend "s3" {}
 }*/
\ No newline at end of file
diff --git a/01-variables.tf b/01-variables.tf
index dead8be..9f83777 100644
--- a/01-variables.tf
+++ b/01-variables.tf
@@ -11,7 +11,7 @@ variable "stackit_region" {
 
 variable "stackit_service_account_key_path" {
   type    = string
-  default =       "keys/sa-key.json"
+  default = "keys/sa-key.json"
 }
 
 variable "stackit_project_id" {