diff --git a/packer/ubuntu-14.04-amd64.json b/packer/ubuntu-14.04-amd64.json
index 0522db478..050facdec 100644
--- a/packer/ubuntu-14.04-amd64.json
+++ b/packer/ubuntu-14.04-amd64.json
@@ -30,9 +30,9 @@
       "guest_additions_path": "VBoxGuestAdditions_{{.Version}}.iso",
       "guest_os_type": "Ubuntu_64",
       "http_directory": "http",
-      "iso_checksum": "4d94f6111b8fe47da94396180ce499d8c0bb44f3",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-amd64.iso",
+      "iso_checksum": "946a6077af6f5f95a51f82fdc44051c7aa19f9cfc5f737954845a6050543d7c2",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-amd64.iso",
       "output_directory": "packer-ubuntu-14.04-amd64-virtualbox",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",
@@ -86,9 +86,9 @@
       "disk_size": 40960,
       "guest_os_type": "ubuntu-64",
       "http_directory": "http",
-      "iso_checksum": "4d94f6111b8fe47da94396180ce499d8c0bb44f3",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-amd64.iso",
+      "iso_checksum": "946a6077af6f5f95a51f82fdc44051c7aa19f9cfc5f737954845a6050543d7c2",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-amd64.iso",
       "output_directory": "packer-ubuntu-14.04-amd64-vmware",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",
@@ -134,9 +134,9 @@
       "parallels_tools_flavor": "lin",
       "guest_os_type": "ubuntu",
       "http_directory": "http",
-      "iso_checksum": "4d94f6111b8fe47da94396180ce499d8c0bb44f3",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-amd64.iso",
+      "iso_checksum": "946a6077af6f5f95a51f82fdc44051c7aa19f9cfc5f737954845a6050543d7c2",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-amd64.iso",
       "output_directory": "packer-ubuntu-14.04-amd64-parallels",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",
diff --git a/packer/ubuntu-14.04-i386.json b/packer/ubuntu-14.04-i386.json
index da187176f..88018157a 100644
--- a/packer/ubuntu-14.04-i386.json
+++ b/packer/ubuntu-14.04-i386.json
@@ -30,9 +30,9 @@
       "guest_additions_path": "VBoxGuestAdditions_{{.Version}}.iso",
       "guest_os_type": "Ubuntu",
       "http_directory": "http",
-      "iso_checksum": "33eb2ad62940aabe99f776f3c35ce90eaad6e2d2",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-i386.iso",
+      "iso_checksum": "976044842804eafc18390505508958b559c131211160ecae5e60694bdf171f78",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-i386.iso",
       "output_directory": "packer-ubuntu-14.04-i386-virtualbox",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",
@@ -86,9 +86,9 @@
       "disk_size": 40960,
       "guest_os_type": "ubuntu",
       "http_directory": "http",
-      "iso_checksum": "33eb2ad62940aabe99f776f3c35ce90eaad6e2d2",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-i386.iso",
+      "iso_checksum": "976044842804eafc18390505508958b559c131211160ecae5e60694bdf171f78",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-i386.iso",
       "output_directory": "packer-ubuntu-14.04-i386-vmware",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",
@@ -134,9 +134,9 @@
       "parallels_tools_flavor": "lin",
       "guest_os_type": "ubuntu",
       "http_directory": "http",
-      "iso_checksum": "33eb2ad62940aabe99f776f3c35ce90eaad6e2d2",
-      "iso_checksum_type": "sha1",
-      "iso_url": "{{user `mirror`}}/14.04/ubuntu-14.04-server-i386.iso",
+      "iso_checksum": "976044842804eafc18390505508958b559c131211160ecae5e60694bdf171f78",
+      "iso_checksum_type": "sha256",
+      "iso_url": "{{user `mirror`}}/14.04.1/ubuntu-14.04.1-server-i386.iso",
       "output_directory": "packer-ubuntu-14.04-i386-parallels",
       "shutdown_command": "echo 'vagrant'|sudo -S shutdown -P now",
       "ssh_password": "vagrant",