diff --git a/install.lua b/install.lua
index a989505..8aec1e1 100644
--- a/install.lua
+++ b/install.lua
@@ -1,4 +1,4 @@
-local _VERSION = '2.0.2'
+local _VERSION = '2.0.3'
 
 local LIST_FILES = {
   -- startup
@@ -12,6 +12,7 @@ local LIST_FILES = {
   'programs/ping.lua',
   'programs/cube.lua',
   'programs/goo.lua',
+  'programs/upgrade.lua',
   -- apis
   'apis/net.lua',
   'apis/eventloop.lua',
diff --git a/programs/upgrade.lua b/programs/upgrade.lua
new file mode 100644
index 0000000..0f4b201
--- /dev/null
+++ b/programs/upgrade.lua
@@ -0,0 +1,30 @@
+local _VERSION = '1.0.0';
+
+local INSTALL_URL = 'https://raw.githubusercontent.com/guillaumearm/cc-libs/master/install.lua';
+
+local command = ...;
+
+local function printUsage()
+  print('upgrade usage:');
+  print();
+  print('\t\t\tupgrade');
+  print('\t\t\tupgrade version');
+  print('\t\t\tupgrade help');
+end
+
+if command == 'version' or command == '-version' or command == '--version' then
+  print('upgrade v' .. _VERSION);
+  return;
+end
+
+if command == 'help' or command == '-help' or command == '--help' then
+  printUsage();
+  return;
+end
+
+if command ~= nil and command ~= '' then
+  printUsage();
+  return;
+end
+
+shell.execute('wget', 'run', INSTALL_URL);