diff --git a/eks-demo/eks-workers.tf b/eks-demo/eks-workers.tf
index 102829a..3339370 100644
--- a/eks-demo/eks-workers.tf
+++ b/eks-demo/eks-workers.tf
@@ -1,7 +1,7 @@
 data "aws_ami" "eks-worker" {
   filter {
     name   = "name"
-    values = ["amazon-eks-node-1*"]
+    values = ["amazon-eks-node-${aws_eks_cluster.demo.version}-v*"]
   }
 
   most_recent = true
@@ -25,7 +25,7 @@ resource "aws_launch_configuration" "demo" {
   associate_public_ip_address = true
   iam_instance_profile        = "${aws_iam_instance_profile.demo-node.name}"
   image_id                    = "${data.aws_ami.eks-worker.id}"
-  instance_type               = "t2.medium"
+  instance_type               = "t2.large"
   name_prefix                 = "terraform-eks-demo"
   security_groups             = ["${aws_security_group.demo-node.id}"]
   user_data_base64            = "${base64encode(local.demo-node-userdata)}"
diff --git a/eks-demo/vpc.tf b/eks-demo/vpc.tf
index b4975dd..38b9093 100644
--- a/eks-demo/vpc.tf
+++ b/eks-demo/vpc.tf
@@ -1,5 +1,6 @@
 module "vpc" {
   source = "terraform-aws-modules/vpc/aws"
+  version = "~> v1.0"
 
   name = "vpc-module-demo"
   cidr = "10.0.0.0/16"