diff --git a/lib/pve/cli/qm.rb b/lib/pve/cli/qm.rb
index b11b16e..97bf4c1 100644
--- a/lib/pve/cli/qm.rb
+++ b/lib/pve/cli/qm.rb
@@ -26,6 +26,13 @@ def cli_qm
       STDERR.puts "! #{$?.exitstatus}"  unless Proxmox::Qemu.find!( name_or_id).exec *command
     }
 
+    ct_cli.cmd( :resize, 'Resize a disk', &lambda {|name_or_id, disk, size|
+      connect
+      qm = Proxmox::Qemu.find! name_or_id
+      task = qm.resize disk, size
+      wait task, text: "Resizing #{qm.sid} #{disk} to #{size}"
+    })
+
     qm.cmd 'help', '', aliases: ['-h', '--help'], &lambda {|*args| help qm, *args }
   }
 end
diff --git a/lib/pve/proxmox.rb b/lib/pve/proxmox.rb
index 6203749..c453d82 100644
--- a/lib/pve/proxmox.rb
+++ b/lib/pve/proxmox.rb
@@ -404,6 +404,11 @@ module Proxmox
     def exec *args
       node.exec 'qm', 'guest', 'exec', vmid, '--', *args
     end
+
+    def resize disk, size
+      upid = rest_put "#{@rest_prefix}/resize", disk: disk, size: size
+      Task.send :__new__, node: @node, host: self, upid: upid
+    end
   end
 
   class LXC < Hosted