diff --git a/ubuntu.pkr.hcl b/ubuntu.pkr.hcl
index af67c23..6b52feb 100644
--- a/ubuntu.pkr.hcl
+++ b/ubuntu.pkr.hcl
@@ -1,16 +1,17 @@
 packer {
-     required_version = ">= 0.0.2"
+     required_version = ">= 1.6.6"
  }
  
- source "amazon-ebs" "ubuntu" {
-    ami_name      = "test-custom-ubuntu20.04-ami"
+source "amazon-ebs" "ubuntu" {
+    ami_name      = "test-custom-ubuntu20.04-ami-{{timestamp}}"
     instance_type = "t2.micro"
     region        = "us-west-1"
     ssh_username  = "ubuntu"
-    # 22.04 "ami-0cbd40f694b804622" # 20.04 "ami-0da7657fe73215c0c"
+    # 20.04 "ami-0da7657fe73215c0c"
     source_ami    = "ami-0da7657fe73215c0c"
     temporary_key_pair_name = "packer_ubuntu"
-    temporary_key_pair_type = "ed25519"
+    temporary_key_pair_type = "rsa"
+    
 }
   
 build {