Fix iso url
diff --git a/ubuntu-16.04/template.json b/ubuntu-16.04/template.json
index d081c2c..2526c9e 100644
--- a/ubuntu-16.04/template.json
+++ b/ubuntu-16.04/template.json
@@ -125,9 +125,9 @@
       "output_directory": "images/{{ user `distro` }}-vbox-{{ timestamp  }}",
       "guest_os_type": "Ubuntu_64",
       "http_directory": "http",
-      "iso_checksum": "8e7b3a1f65db6baeb3e2696d905ea84a",
+      "iso_checksum": "23e97cd5d4145d4105fbf29878534049",
       "iso_checksum_type": "md5",
-      "iso_url": "http://cdimage.ubuntu.com/ubuntu-server/daily/current/xenial-server-amd64.iso",
+      "iso_url": "http://releases.ubuntu.com/16.04/ubuntu-16.04-server-amd64.iso",
       "ssh_username": "{{user `user`}}",
       "ssh_password": "{{user `password`}}",
       "ssh_port": 22,
@@ -177,9 +177,9 @@
       "output_directory": "images/{{ user `distro` }}-vmware-{{ timestamp  }}",
       "guest_os_type": "linux",
       "http_directory": "http",
-      "iso_checksum": "8e7b3a1f65db6baeb3e2696d905ea84a",
+      "iso_checksum": "23e97cd5d4145d4105fbf29878534049",
       "iso_checksum_type": "md5",
-      "iso_url": "http://cdimage.ubuntu.com/ubuntu-server/daily/current/xenial-server-amd64.iso",
+      "iso_url": "http://releases.ubuntu.com/16.04/ubuntu-16.04-server-amd64.iso",
       "ssh_username": "{{user `user`}}",
       "ssh_password": "{{user `password`}}",
       "ssh_port": 22,
@@ -201,9 +201,9 @@
       "format": "qcow2",
       "accelerator": "kvm",
       "disk_size": "{{ user `disk_size`}}",
-      "iso_url": "http://cdimage.ubuntu.com/ubuntu-server/daily/current/xenial-server-amd64.iso",
+      "iso_url": "http://releases.ubuntu.com/16.04/ubuntu-16.04-server-amd64.iso",
       "iso_checksum_type": "md5",
-      "iso_checksum": "8e7b3a1f65db6baeb3e2696d905ea84a",
+      "iso_checksum": "23e97cd5d4145d4105fbf29878534049",
       "http_directory": "http",
       "headless": true,
       "ssh_username": "{{user `user`}}",