diff --git a/main.tf b/main.tf
index 59258b9..2f35316 100644
--- a/main.tf
+++ b/main.tf
@@ -1,10 +1,10 @@
 locals {
   resource_name_postfix = var.aws_cluster_name
 
-  iam_role_name              = "castai-eks-${local.resource_name_postfix}"
+  iam_role_name              = "castai-eks-${substr(local.resource_name_postfix, 0, 53)}"
   iam_policy_name            = var.create_iam_resources_per_cluster ? "CastEKSPolicy-${local.resource_name_postfix}" : "CastEKSPolicy-tf"
-  iam_role_policy_name       = "castai-user-policy-${local.resource_name_postfix}"
-  instance_profile_role_name = "castai-eks-instance-${local.resource_name_postfix}"
+  iam_role_policy_name       = "castai-user-policy-${substr(local.resource_name_postfix, 0, 45)}"
+  instance_profile_role_name = "castai-eks-instance-${substr(local.resource_name_postfix, 0, 44)}"
   iam_policy_prefix          = "arn:${data.aws_partition.current.partition}:iam::aws:policy"
 }