diff --git a/CHANGELOG.md b/CHANGELOG.md
index 97e2b2a..7aceeb5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Update `proxmox` provider to `3.0.1-rc4`.
+- Refactor disks implementation for upstream provider.
+
 ## [1.8.0] - 2023-04-03
 
 ### Added
diff --git a/README.md b/README.md
index 9fe22a3..a0dda09 100644
--- a/README.md
+++ b/README.md
@@ -11,14 +11,14 @@ This module is an opinionated take on creating a VM in Proxmox; not all possible
 
 | Name | Version |
 |------|---------|
-| terraform | >= 0.14.0 |
-| proxmox | >= 2.9.14 |
+| terraform | >= 1.3.0 |
+| proxmox | >= 3.0.1-rc4 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| proxmox | 2.9.11 |
+| proxmox | 2.9.13 |
 
 ## Resources
 
@@ -42,15 +42,14 @@ This module is an opinionated take on creating a VM in Proxmox; not all possible
 | boot | Boot order for the instance. | `string` | no |
 | cicustom | Path(s) to cloud-init config files (ignored when pxe_boot is true). | `string` | no |
 | clone | Name of the template to clone (ignored when pxe_boot is true). | `string` | no |
-| cloudinit_cdrom_storage | Name of the storage to create the cloud-init image in (e.g. local-lvm). | `string` | no |
 | cpu | The type of CPU to emulate in the guest. | `string` | no |
-| disks | List of objects representing additional disks. | <pre>list(object({<br>    type    = string<br>    storage = string<br>    size    = string<br>  }))</pre> | no |
+| disks | List of objects representing additional disks. | <pre>list(object({<br>    discard    = optional(bool)<br>    emulatessd = optional(bool)<br>    iothread   = optional(bool)<br>    size       = optional(string)<br>    slot       = optional(string)<br>    storage    = string<br>    type       = string<br>  }))</pre> | no |
 | full_clone | Create a full clone; if false, a linked clone will be created (ignored when pxe_boot is true). | `bool` | no |
 | hagroup | The HA group identifier the resource belongs to. | `string` | no |
 | hastate | Requested HA state for the resource. | `string` | no |
 | onboot | Whether to have the VM startup after the PVE node starts. | `bool` | no |
-| oncreate | Whether to have the VM startup after the VM is created. | `bool` | no |
 | os_type | Type of OS for preprovisioning. | `string` | no |
 | pxe_boot | Set PXE boot mode | `bool` | no |
 | qemu_agent | Enable QEMU guest agent (must be installed in the template). Set to `1` to enable or `0` to disable. | `number` | no |
+| vm_state | Desired power state of the VM. | `string` | no |
 <!-- END_TF_DOCS -->
diff --git a/instance.tf b/instance.tf
index bec6999..5f12aa1 100644
--- a/instance.tf
+++ b/instance.tf
@@ -9,7 +9,7 @@ resource "proxmox_vm_qemu" "proxmox_instance" {
   pxe      = var.pxe_boot
   boot     = var.boot
   onboot   = var.onboot
-  oncreate = var.oncreate
+  vm_state = var.vm_state
 
   agent = var.qemu_agent
 
@@ -37,14 +37,17 @@ resource "proxmox_vm_qemu" "proxmox_instance" {
   dynamic "disk" {
     for_each = var.disks
     content {
-      type    = disk.value.type
-      storage = disk.value.storage
-      size    = disk.value.size
+      discard    = disk.value.discard
+      emulatessd = disk.value.emulatessd
+      iothread   = disk.value.iothread
+      size       = disk.value.size
+      slot       = disk.value.slot
+      storage    = disk.value.storage
+      type       = disk.value.type
     }
   }
 
   os_type  = var.pxe_boot == true ? null : var.os_type
   cicustom = var.pxe_boot == true ? null : var.cicustom
   # example: "user=${local.citemplate_storage}:${local.snippet_dir}/user-${local.snippet_file_base},network=${local.citemplate_storage}:${local.snippet_dir}/network-${local.snippet_file_base}"
-  cloudinit_cdrom_storage = var.pxe_boot == true ? null : var.cloudinit_cdrom_storage
 }
diff --git a/variables.tf b/variables.tf
index bccfd8e..a42d72d 100644
--- a/variables.tf
+++ b/variables.tf
@@ -103,10 +103,10 @@ variable "onboot" {
   type        = bool
 }
 
-variable "oncreate" {
-  default     = null
-  description = "Whether to have the VM startup after the VM is created."
-  type        = bool
+variable "vm_state" {
+  default     = "running"
+  description = "Desired power state of the VM."
+  type        = string
 }
 
 variable "network_interfaces" {
@@ -120,13 +120,17 @@ variable "network_interfaces" {
 }
 
 variable "disks" {
-  default     = null
   description = "List of objects representing additional disks."
   type = list(object({
-    type    = string
-    storage = string
-    size    = string
+    discard    = optional(bool)
+    emulatessd = optional(bool)
+    iothread   = optional(bool)
+    size       = optional(string)
+    slot       = optional(string)
+    storage    = string
+    type       = string
   }))
+  default = []
 }
 
 variable "os_type" {
@@ -140,9 +144,3 @@ variable "cicustom" {
   description = "Path(s) to cloud-init config files (ignored when pxe_boot is true)."
   type        = string
 }
-
-variable "cloudinit_cdrom_storage" {
-  default     = null
-  description = "Name of the storage to create the cloud-init image in (e.g. local-lvm)."
-  type        = string
-}
diff --git a/versions.tf b/versions.tf
index 54b7164..b945a56 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 0.14.0"
+  required_version = ">= 1.3.0"
 
   required_providers {
     proxmox = {
       source  = "Telmate/proxmox"
-      version = ">= 2.9.14"
+      version = ">= 3.0.1-rc4"
     }
   }
 }