diff --git a/stretch.json b/stretch.json
index 3175809..763f9b8 100644
--- a/stretch.json
+++ b/stretch.json
@@ -1,58 +1,68 @@
 {
   "description": "Vanilla Debian Stretch base box",
   "variables": {
-      "box_version": "9.0.0",
+      "box_version": "9.1.0",
       "box_changelog": "* stable point release\n"
     },
   "builders": [
     {
       "boot_command": [
         "<esc><wait>",
         "install <wait>",
         "preseed/url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/debian-9-stretch-preseed.cfg <wait>",
         "debian-installer=en_US <wait>",
         "auto <wait>",
         "locale=en_US <wait>",
         "kbd-chooser/method=us <wait>",
         "netcfg/get_hostname=stretch <wait>",
         "netcfg/get_domain=grnet.gr <wait>",
         "fb=false <wait>",
         "debconf/frontend=noninteractive <wait>",
         "console-setup/ask_detect=false <wait>",
         "console-keymaps-at/keymap=us <wait>",
         "keyboard-configuration/xkb-keymap=us <wait>",
         "<enter><wait>"
       ],
       "disk_size": "1050",
       "disk_interface": "virtio",
       "headless": false,
       "http_directory": "http",
-      "iso_url": "https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-9.0.0-amd64-netinst.iso",
+      "iso_url": "https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-9.1.0-amd64-netinst.iso",
       "iso_checksum_type": "sha256",
-      "iso_checksum": "9d98f339016dc2a3998881949a8f0678baede26b5106f18ef1168d7e13606773",
+      "iso_checksum": "c9e070074de83aa22e141f59a423e5210a5019b369ef1efe61a2afd44ba8f371",
       "shutdown_command": "poweroff",
       "ssh_password": "root",
       "ssh_username": "root",
       "ssh_port": "22",
       "ssh_wait_timeout": "100000s",
       "type": "qemu",
       "qemuargs": [[ "-m", "2048" ],[ "-smp", "2" ]],
       "accelerator": "kvm",
       "vm_name": "debian-stretch-{{user `box_version`}}-x86_64.img",
       "output_directory": "stretch.build",
       "format": "raw"
     }
   ],
   "provisioners": [
     {
       "type": "shell",
       "pause_before": "5s",
       "inline": ["sed -i 's/PermitRootLogin.*/PermitRootLogin without-password/g' /etc/ssh/sshd_config"]
     },
     {
+      "type": "shell",
+      "pause_before": "5s",
+      "inline": ["ln -s /dev/null /etc/systemd/network/99-default.link"]
+    },
+    {
+      "type": "shell",
+      "pause_before": "5s",
+      "inline": ["update-initramfs -u"]
+    },
+    {
       "type": "file",
       "source": "files/resolv.conf",
       "destination": "/etc/resolv.conf"
     }
   ]
 }