diff --git a/ci/amd64/debian/joininbox-amd64-debian.json b/ci/amd64/debian/joininbox-amd64-debian.json
index 539f784..f4fb581 100644
--- a/ci/amd64/debian/joininbox-amd64-debian.json
+++ b/ci/amd64/debian/joininbox-amd64-debian.json
@@ -1,23 +1,17 @@
 {
   "variables": {
-  "iso_name": "debian-12.1.0-amd64-netinst.iso",
-  "iso_checksum": "9f181ae12b25840a508786b1756c6352a0e58484998669288c4eec2ab16b8559",
+  "iso_name": "debian-12.2.0-amd64-netinst.iso",
+  "iso_checksum": "23ab444503069d9ef681e3028016250289a33cc7bab079259b73100daee0af66",
   "box_basename": "debian",
   "build_directory": "../builds",
-  "build_timestamp": "{{isotime \"20060102150405\"}}",
   "cpus": "2",
   "disk_size": "30000",
-  "git_revision": "__unknown_git_revision__",
-  "guest_additions_url": "",
   "headless": "false",
   "http_directory": "{{template_dir}}/http",
-  "http_proxy": "{{env `http_proxy`}}",
-  "https_proxy": "{{env `https_proxy`}}",
   "memory": "2048",
   "mirror": "http://cdimage.debian.org/cdimage/release",
   "mirror_directory": "current/amd64/iso-cd",
   "name": "debian",
-  "no_proxy": "{{env `no_proxy`}}",
   "preseed_path": "debian-9/preseed.cfg",
   "qemu_display": "none",
   "qemu_bios": "bios-256k.bin",
@@ -56,8 +50,6 @@
       "boot_wait": "5s",
       "cpus": "{{ user `cpus` }}",
       "disk_size": "{{user `disk_size`}}",
-      "guest_additions_path": "VBoxGuestAdditions_{{.Version}}.iso",
-      "guest_additions_url": "{{ user `guest_additions_url` }}",
       "guest_os_type": "Debian_64",
       "hard_drive_interface": "sata",
       "headless": "{{ user `headless` }}",