diff --git a/playground/README.md b/playground/README.md
index 3cc7b5d..e929157 100644
--- a/playground/README.md
+++ b/playground/README.md
@@ -14,6 +14,12 @@ most used plugins for programmer.
 
 There also three folder `js`, `go`, `py`. Those folder have some basic source code you can play with.
 
+## Install LSP
+
+The playground has js, py, go folder, so you can install either one your self in your PATH.
+If you want to try lua, Please check sumneko setup in init.lua make sure it pointed to correct path. By default it
+potint to ~/github/sumneko
+
 ## run init.lua
 
 ```bash
diff --git a/playground/init.lua b/playground/init.lua
index d8e180b..fb29b5f 100644
--- a/playground/init.lua
+++ b/playground/init.lua
@@ -4,6 +4,21 @@ vim.cmd([[set packpath=/tmp/nvim/site]])
 local package_root = '/tmp/nvim/site/pack'
 local install_path = package_root .. '/packer/start/packer.nvim'
 
+-- IMPORTANT: update the sumneko setup if you need lua language server
+-- I installed it in '/github/sumneko/lua-language-server'
+local sumneko_root_path = vim.fn.expand('$HOME') .. '/github/sumneko/lua-language-server'
+local sumneko_binary = vim.fn.expand('$HOME') .. '/github/sumneko/lua-language-server/bin/macOS/lua-language-server'
+
+local lua_cfg = {
+  cmd = { sumneko_binary, '-E', sumneko_root_path .. '/main.lua' },
+  settings = {
+    Lua = {
+      runtime = { version = 'LuaJIT', path = vim.split(package.path, ';') },
+      diagnostics = { enable = true },
+    },
+  },
+}
+
 local function load_plugins()
   require('packer').startup({
     function(use)
@@ -96,7 +111,6 @@ if vim.fn.isdirectory(install_path) == 0 then
   load_plugins()
   require('packer').sync()
   vim.cmd('colorscheme aurora')
-
 else
   load_plugins()
   vim.cmd('colorscheme aurora')