diff --git a/images/capi/packer/proxmox/packer.json.tmpl b/images/capi/packer/proxmox/packer.json.tmpl
index bb0bdc226..99a4b2fc6 100644
--- a/images/capi/packer/proxmox/packer.json.tmpl
+++ b/images/capi/packer/proxmox/packer.json.tmpl
@@ -175,6 +175,7 @@
     "crictl_version": null,
     "disk_size": "20G",
     "existing_ansible_ssh_args": "{{env `ANSIBLE_SSH_ARGS`}}",
+    "http_callback_address": "{{env `PROXMOX_HTTP_CALLBACK_ADDRESS`}}",
     "http_directory": "./packer/proxmox/linux/{{user `distro_name`}}/http/",
     "iso_storage_pool": "{{env `PROXMOX_ISO_POOL`}}",
     "kubernetes_cni_deb_version": null,