diff --git a/open-tofu/main.tf.template b/open-tofu/main.tf.template
index dc694c2..7e209d0 100644
--- a/open-tofu/main.tf.template
+++ b/open-tofu/main.tf.template
@@ -73,6 +73,7 @@ resource "aws_lambda_function" "mpic_coordinator_lambda" {
     source_code_hash = filebase64sha256("../{{source-path}}/mpic_coordinator_lambda/mpic_coordinator_lambda.zip")
     runtime = "python3.11"
     architectures = ["arm64"]
+    memory_size = var.coordinator_memory_size
     timeout = 60
     layers = [
         aws_lambda_layer_version.python3_open_mpic_layer.arn,
diff --git a/open-tofu/variables.tf b/open-tofu/variables.tf
index 05a1c85..f91a357 100644
--- a/open-tofu/variables.tf
+++ b/open-tofu/variables.tf
@@ -3,3 +3,10 @@ variable "dnssec_enabled" {
   description = "Enable DNSSEC"
   default     = true
 }
+
+variable "coordinator_memory_size" {
+  type        = number
+  description = "MPIC Coordinator Lambda Function Memory"
+  default     = 512
+
+}