diff --git a/builds/linux/ubuntu/20-04-lts/linux-ubuntu.auto.pkrvars.hcl b/builds/linux/ubuntu/20-04-lts/linux-ubuntu.auto.pkrvars.hcl
index accd9e9..e5156d7 100644
--- a/builds/linux/ubuntu/20-04-lts/linux-ubuntu.auto.pkrvars.hcl
+++ b/builds/linux/ubuntu/20-04-lts/linux-ubuntu.auto.pkrvars.hcl
@@ -13,9 +13,10 @@ vm_os_version    = "20.04-lts"
 
 // Virtual Machine Guest Operating System Setting
 vm_os_type       = "l26"
+vm_cloudinit     = false
 
 // Virtual Machine Hardware Settings
-vm_bios                 = "seabios"
+vm_bios                 = "ovmf"
 vm_cpu_count            = 1
 vm_cpu_sockets          = 1
 vm_cpu_type             = "kvm64"
@@ -31,8 +32,8 @@ vm_vlan_tag             = "102"
 
 // Removable Media Settings
 iso_path     = "iso"
-iso_file     = "ubuntu-20.04-live-server-amd64.iso"
-iso_checksum = "caf3fd69c77c439f162e2ba6040e9c320c4ff0d69aad1340a514319a9264df9f"
+iso_file     = "ubuntu-20.04.6-live-server-amd64.iso"
+iso_checksum = "file:https://releases.ubuntu.com/focal/SHA256SUMS"
 
 // Boot Settings
 vm_boot      = "order=virtio0;ide2;net0"