diff --git a/infrastructure/terraform/lambda/engine/variables.tf b/infrastructure/terraform/lambda/engine/variables.tf
index c43a9f3d..9805d409 100644
--- a/infrastructure/terraform/lambda/engine/variables.tf
+++ b/infrastructure/terraform/lambda/engine/variables.tf
@@ -23,6 +23,21 @@ variable "maximum_concurrency" {
   description = "Maximum number of concurrent Lambda invocations from SQS (2-1000). null = no limit."
 }
 
+variable "db_host" {
+  type      = string
+  sensitive = true
+}
+
+variable "db_name" {
+  type      = string
+  sensitive = true
+}
+
+variable "db_port" {
+  type      = string
+  sensitive = true
+}
+
 variable "api_key" {
   type      = string
   sensitive = true