diff --git a/terraform/.terraform.lock.hcl b/terraform/.terraform.lock.hcl
index ebfb2880f..91d76bb0f 100644
--- a/terraform/.terraform.lock.hcl
+++ b/terraform/.terraform.lock.hcl
@@ -62,7 +62,8 @@ provider "registry.terraform.io/hashicorp/azurerm" {
 }
 
 provider "registry.terraform.io/hashicorp/null" {
-  version = "3.2.1"
+  version     = "3.2.1"
+  constraints = ">= 3.2.1"
   hashes = [
     "h1:ydA0/SNRVB1o95btfshvYsmxA+jZFRZcvKzZSB+4S1M=",
     "zh:58ed64389620cc7b82f01332e27723856422820cfd302e304b5f6c3436fb9840",
diff --git a/terraform/README.md b/terraform/README.md
index 6245bd82d..13f7bca81 100644
--- a/terraform/README.md
+++ b/terraform/README.md
@@ -137,7 +137,7 @@ No providers.
 | Name | Source | Version |
 |------|--------|---------|
 | <a name="module_azure_container_apps_hosting"></a> [azure\_container\_apps\_hosting](#module\_azure\_container\_apps\_hosting) | github.com/DFE-Digital/terraform-azurerm-container-apps-hosting | v0.17.4 |
-| <a name="module_azurerm_key_vault"></a> [azurerm\_key\_vault](#module\_azurerm\_key\_vault) | github.com/DFE-Digital/terraform-azurerm-key-vault-tfvars | v0.1.2 |
+| <a name="module_azurerm_key_vault"></a> [azurerm\_key\_vault](#module\_azurerm\_key\_vault) | github.com/DFE-Digital/terraform-azurerm-key-vault-tfvars | v0.1.3 |
 
 ## Resources
 
diff --git a/terraform/key-vault-tfvars-secrets.tf b/terraform/key-vault-tfvars-secrets.tf
index a4e2a798c..918e9b395 100644
--- a/terraform/key-vault-tfvars-secrets.tf
+++ b/terraform/key-vault-tfvars-secrets.tf
@@ -1,5 +1,5 @@
 module "azurerm_key_vault" {
-  source = "github.com/DFE-Digital/terraform-azurerm-key-vault-tfvars?ref=v0.1.2"
+  source = "github.com/DFE-Digital/terraform-azurerm-key-vault-tfvars?ref=v0.1.3"
 
   environment                           = local.environment
   project_name                          = local.project_name