diff --git a/stacks/sample_bucket/main.tf b/stacks/sample_bucket/main.tf
index 2f7ac1e4..b062b7a7 100644
--- a/stacks/sample_bucket/main.tf
+++ b/stacks/sample_bucket/main.tf
@@ -9,5 +9,5 @@ module "sample_bucket" {
 # Output the ID of the sample S3 bucket.
 output "sample_bucket_id" {
   description = "ID of the sample S3 bucket."
-  value        = module.sample_bucket.id
+  value       = module.sample_bucket.id
 }
diff --git a/stacks/sample_instance/main.tf b/stacks/sample_instance/main.tf
index 6e41acb0..d68ed015 100644
--- a/stacks/sample_instance/main.tf
+++ b/stacks/sample_instance/main.tf
@@ -5,7 +5,7 @@ data "aws_ami" "ubuntu" {
 
   filter {
     name   = "name"
-    values = ["ubuntu/images/hvm-ssd/ubuntu-noble-24.04-amd64-server-*"]
+    values = ["ubuntu/images/hvm-ssd/ubuntu-jammy-22.04-amd64-server-*"]
   }
 }