diff --git a/proxmox/nodes/vms/vms.go b/proxmox/nodes/vms/vms.go
index 4bec31a6..38f86977 100644
--- a/proxmox/nodes/vms/vms.go
+++ b/proxmox/nodes/vms/vms.go
@@ -334,7 +334,7 @@ func (c *Client) ShutdownVMAsync(ctx context.Context, d *ShutdownRequestBody) (*
 // StartVM starts a virtual machine.
 // Returns the task log if the VM had warnings at startup, or fails to start.
 func (c *Client) StartVM(ctx context.Context, timeout int) ([]string, error) {
-	taskID, err := c.StartVMAsync(ctx)
+	taskID, err := c.StartVMAsync(ctx, timeout)
 	if err != nil {
 		return nil, err
 	}
@@ -362,10 +362,13 @@ func (c *Client) StartVM(ctx context.Context, timeout int) ([]string, error) {
 }
 
 // StartVMAsync starts a virtual machine asynchronously.
-func (c *Client) StartVMAsync(ctx context.Context) (*string, error) {
+func (c *Client) StartVMAsync(ctx context.Context, timeout int) (*string, error) {
+	reqBody := &StartRequestBody{
+		TimeoutSeconds: &timeout,
+	}
 	resBody := &StartResponseBody{}
 
-	err := c.DoRequest(ctx, http.MethodPost, c.ExpandPath("status/start"), nil, resBody)
+	err := c.DoRequest(ctx, http.MethodPost, c.ExpandPath("status/start"), reqBody, resBody)
 	if err != nil {
 		return nil, fmt.Errorf("error starting VM: %w", err)
 	}
diff --git a/proxmox/nodes/vms/vms_types.go b/proxmox/nodes/vms/vms_types.go
index 89aaae9a..0cb7148d 100644
--- a/proxmox/nodes/vms/vms_types.go
+++ b/proxmox/nodes/vms/vms_types.go
@@ -699,6 +699,19 @@ type ShutdownResponseBody struct {
 	Data *string `json:"data,omitempty"`
 }
 
+// StartRequestBody contains the body for a VM start request.
+type StartRequestBody struct {
+	ForceCPU         *string           `json:"force-cpu,omitempty"         url:"force-cpu,omitempty"`
+	Machine          *string           `json:"machine,omitempty"           url:"machine,omitempty"`
+	MigrateFrom      *string           `json:"migratefrom,omitempty"       url:"migratefrom,omitempty"`
+	MigrationNetwork *string           `json:"migration_network,omitempty" url:"migration_network,omitempty"`
+	MigrationType    *string           `json:"migration_type,omitempty"    url:"migration_type,omitempty"`
+	SkipLock         *types.CustomBool `json:"skipLock,omitempty"          url:"skipLock,omitempty,int"`
+	StateURI         *string           `json:"stateuri,omitempty"          url:"stateuri,omitempty"`
+	TargetStorage    *string           `json:"targetstorage,omitempty"     url:"targetstorage,omitempty"`
+	TimeoutSeconds   *int              `json:"timeout,omitempty"           url:"timeout,omitempty"`
+}
+
 // StartResponseBody contains the body from a VM start response.
 type StartResponseBody struct {
 	Data *string `json:"data,omitempty"`