diff --git a/deployment/terraform/lambda/modelling_e2e/variables.tf b/deployment/terraform/lambda/modelling_e2e/variables.tf
index 7fd1ecde..e45ec68a 100644
--- a/deployment/terraform/lambda/modelling_e2e/variables.tf
+++ b/deployment/terraform/lambda/modelling_e2e/variables.tf
@@ -20,8 +20,8 @@ variable "image_digest" {
 
 variable "reserved_concurrent_executions" {
   type        = number
-  default     = 1
-  description = "Start at 1 to validate correctness before scaling up."
+  default     = 2
+  description = "Concurrent executions"
 }
 
 variable "batch_size" {