diff --git a/lua/navigator.lua b/lua/navigator.lua
index da5d010..265b60b 100755
--- a/lua/navigator.lua
+++ b/lua/navigator.lua
@@ -251,7 +251,6 @@ M.setup = function(cfg)
     pattern = '*',
     callback = function()
       require('navigator.lspclient.clients').on_filetype()
-      M.add_highlight()
     end,
   })
   require('navigator.lazyloader').init()
diff --git a/lua/navigator/lspclient/sumneko_lua.lua b/lua/navigator/lspclient/sumneko_lua.lua
new file mode 100644
index 0000000..0c0364c
--- /dev/null
+++ b/lua/navigator/lspclient/sumneko_lua.lua
@@ -0,0 +1,85 @@
+local vfn = vim.fn
+
+local library = {}
+local sumneko_cfg = {
+  cmd = { 'lua-language-server' },
+  filetypes = { 'lua' },
+  on_attach = on_attach,
+  flags = { allow_incremental_sync = true, debounce_text_changes = 500 },
+  settings = {
+    Lua = {
+      runtime = {
+        -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
+        version = 'LuaJIT',
+      },
+      diagnostics = {
+        enable = true,
+        -- Get the language server to recognize the `vim` global
+        globals = { 'vim', 'describe', 'it', 'before_each', 'after_each', 'teardown', 'pending' },
+      },
+      completion = { callSnippet = 'Both' },
+      workspace = {
+        -- Make the server aware of Neovim runtime files
+        library = library,
+        maxPreload = 2000,
+        preloadFileSize = 40000,
+      },
+      telemetry = { enable = false },
+    },
+  },
+  on_new_config = function(cfg, root)
+    local libs = vim.tbl_deep_extend('force', {}, library)
+    libs[root] = nil
+    cfg.settings.Lua.workspace.library = libs
+    return cfg
+  end,
+}
+
+local function add(lib)
+  for _, p in pairs(vfn.expand(lib, false, true)) do
+    p = vim.loop.fs_realpath(p)
+    if p then
+      library[p] = true
+    end
+  end
+end
+local function sumneko_lua()
+  -- add runtime
+  -- add plugins it may be very slow to add all in path
+  add('$VIMRUNTIME')
+  -- add your config
+  -- local home = vfn.expand("$HOME")
+  add(vfn.stdpath('config'))
+
+  library[vfn.expand('$VIMRUNTIME/lua')] = true
+  library[vfn.expand('$VIMRUNTIME/lua/vim')] = true
+  library[vfn.expand('$VIMRUNTIME/lua/vim/lsp')] = true
+
+  local on_attach = require('navigator.lspclient.attach').on_attach
+  local luadevcfg = {
+    library = {
+      vimruntime = true, -- runtime path
+      types = true, -- full signature, docs and completion of vim.api, vim.treesitter, vim.lsp and others
+      plugins = { 'nvim-treesitter', 'plenary.nvim' },
+    },
+    lspconfig = {
+      -- cmd = {sumneko_binary},
+      on_attach = on_attach,
+    },
+  }
+
+  local luadev = {}
+  local user_luadev = _NgConfigValues.lsp['lua-dev']
+  if user_luadev then
+    luadev = vim.tbl_deep_extend('force', luadev, user_luadev)
+  end
+  require('navigator.lazyloader').load('lua-dev.nvim', 'folke/lua-dev.nvim')
+
+  local ok, l = pcall(require, 'lua-dev')
+  if ok and l then
+    luadev = l.setup(luadevcfg)
+  end
+
+  sumneko_cfg = vim.tbl_deep_extend('force', luadev, sumneko_cfg)
+  return sumneko_cfg
+end