diff --git a/main.tf b/main.tf
index d324bd30..04aabf19 100644
--- a/main.tf
+++ b/main.tf
@@ -1204,6 +1204,7 @@ data "aws_iam_policy_document" "aws_load_balancer_controller" {
       "ec2:DescribeCoipPools",
       "ec2:GetSecurityGroupsForVpc",
       "ec2:DescribeIpamPools",
+      "ec2:DescribeRouteTables",
       "elasticloadbalancing:DescribeLoadBalancers",
       "elasticloadbalancing:DescribeLoadBalancerAttributes",
       "elasticloadbalancing:DescribeListeners",