diff --git a/builder/proxmox/common/config.go b/builder/proxmox/common/config.go
index f5d25572..3ffedd1d 100644
--- a/builder/proxmox/common/config.go
+++ b/builder/proxmox/common/config.go
@@ -109,6 +109,8 @@ type diskConfig struct {
 	CacheMode       string `mapstructure:"cache_mode"`
 	DiskFormat      string `mapstructure:"format"`
 	IOThread        bool   `mapstructure:"io_thread"`
+	Discard         bool   `mapstructure:"discard"`
+	SSD             bool   `mapstructure:"ssd"`
 }
 type efiConfig struct {
 	EFIStoragePool  string `mapstructure:"efi_storage_pool"`
diff --git a/builder/proxmox/common/step_start_vm.go b/builder/proxmox/common/step_start_vm.go
index 849227dc..c6644419 100644
--- a/builder/proxmox/common/step_start_vm.go
+++ b/builder/proxmox/common/step_start_vm.go
@@ -284,10 +284,17 @@ func generateProxmoxDisks(disks []diskConfig) proxmox.QemuDevices {
 		setDeviceParamIfDefined(devs[idx], "storage", disks[idx].StoragePool)
 		setDeviceParamIfDefined(devs[idx], "cache", disks[idx].CacheMode)
 		setDeviceParamIfDefined(devs[idx], "format", disks[idx].DiskFormat)
-
 		if devs[idx]["type"] == "scsi" || devs[idx]["type"] == "virtio" {
 			setDeviceParamIfDefined(devs[idx], "iothread", strconv.FormatBool(disks[idx].IOThread))
 		}
+		// Proxmox API expectes the value of discard to bei either "off" or "on"
+		setDeviceParamIfDefined(devs[idx], "discard", func() string {
+			if disks[idx].Discard {
+				return "on"
+			}
+			return "off"
+		}())
+		setDeviceParamIfDefined(devs[idx], "ssd", strconv.FormatBool(disks[idx].IOThread))
 	}
 	return devs
 }
diff --git a/docs/builders/clone.mdx b/docs/builders/clone.mdx
index 8162eaf6..7c898bb0 100644
--- a/docs/builders/clone.mdx
+++ b/docs/builders/clone.mdx
@@ -49,7 +49,7 @@ in the image's Cloud-Init settings for provisioning.
 - `username` (string) - Username when authenticating to Proxmox, including
   the realm. For example `user@pve` to use the local Proxmox realm. When using
   token authentication, the username must include the token id after an exclamation
-  mark. For example, `user@pve!tokenid`. 
+  mark. For example, `user@pve!tokenid`.
   Can also be set via the `PROXMOX_USERNAME` environment variable.
 
 - `password` (string) - Password for the user.
@@ -228,6 +228,12 @@ or responding to pattern `/dev/.+`. Example:
     multiple disks are used. Requires `virtio-scsi-single` controller and a
     `scsi` or `virtio` disk. Defaults to `false`.
 
+  - `discard` (bool) - Relay TRIM commands to the underlying storage. Defaults
+    to false.
+
+  - `ssd` (bool) - Drive will be represented to the guest as solid-state drive
+    rather than a rotational disk.
+
 - `template_name` (string) - Name of the template. Defaults to the generated
   name used during creation.
 
@@ -261,7 +267,7 @@ or responding to pattern `/dev/.+`. Example:
 
 - `ipconfig` (array of objects) - Set IP address and gateway via Cloud-Init.
   If you have configured more than one network interface, make sure to match the order of
-  `network_adapters` and `ipconfig`. 
+  `network_adapters` and `ipconfig`.
 
   Usage example (JSON):
 
diff --git a/docs/builders/iso.mdx b/docs/builders/iso.mdx
index 68235a22..c0523b01 100644
--- a/docs/builders/iso.mdx
+++ b/docs/builders/iso.mdx
@@ -239,6 +239,12 @@ or responding to pattern `/dev/.+`. Example:
     multiple disks are used. Requires `virtio-scsi-single` controller and a
     `scsi` or `virtio` disk. Defaults to `false`.
 
+  - `discard` (bool) - Relay TRIM commands to the underlying storage. Defaults
+    to false.
+
+  - `ssd` (bool) - Drive will be represented to the guest as solid-state drive
+    rather than a rotational disk.
+
 - `template_name` (string) - Name of the template. Defaults to the generated
   name used during creation.