diff --git a/docker/terraform.sh b/docker/terraform.sh
index 2f34e9d..4c7c416 100755
--- a/docker/terraform.sh
+++ b/docker/terraform.sh
@@ -34,6 +34,7 @@ prepare () {
   export AZURE_STORAGE_ACCOUNT_CONTAINER="${CONTAINER_NAME}"
   export AZURE_KEYVAULT_NAME="${BACKEND_KV}"
   export AZURE_KEYVAULT_KEY_NAME="${BACKEND_KV_KEY}"
+  export AZURE_RESOURCE_LOCKS="${AZURE_RESOURCE_LOCKS:-true}"
   tf-prepare azure
 }