diff --git a/flowlogs-transit-gateway/main.tf b/flowlogs-transit-gateway/main.tf
index f3a3180..b1e0aa3 100644
--- a/flowlogs-transit-gateway/main.tf
+++ b/flowlogs-transit-gateway/main.tf
@@ -52,11 +52,12 @@ locals {
 }
 
 resource "aws_flow_log" "flowlog_s3" {
-  log_destination      = format("%v/%v/%v/", var.flowlog_bucket_arn, "tgw", var.label)
-  log_destination_type = "s3"
-  iam_role_arn         = var.flowlog_role_arn
-  traffic_type         = "ALL"
-  transit_gateway_id   = var.transit_gateway_id
+  log_destination          = format("%v/%v/%v/", var.flowlog_bucket_arn, "tgw", var.label)
+  log_destination_type     = "s3"
+  iam_role_arn             = var.flowlog_role_arn
+  traffic_type             = "ALL"
+  transit_gateway_id       = var.transit_gateway_id
+  max_aggregation_interval = 60
 
   tags = merge(
     local.base_tags,
@@ -79,10 +80,11 @@ resource "aws_cloudwatch_log_group" "flowlog" {
 }
 
 resource "aws_flow_log" "flowlog_cloudwatch" {
-  log_destination    = aws_cloudwatch_log_group.flowlog.arn
-  iam_role_arn       = var.flowlog_role_arn
-  traffic_type       = "ALL"
-  transit_gateway_id = var.transit_gateway_id
+  log_destination          = aws_cloudwatch_log_group.flowlog.arn
+  iam_role_arn             = var.flowlog_role_arn
+  traffic_type             = "ALL"
+  transit_gateway_id       = var.transit_gateway_id
+  max_aggregation_interval = 60
 
   tags = merge(
     local.base_tags,