diff --git a/lazy-lock.json b/lazy-lock.json
index a899dd3..4a3bda3 100644
--- a/lazy-lock.json
+++ b/lazy-lock.json
@@ -1,6 +1,8 @@
 {
   "catppuccin": { "branch": "main", "commit": "a1439ad7c584efb3d0ce14ccb835967f030450fe" },
   "lazy.nvim": { "branch": "main", "commit": "3f13f080434ac942b150679223d54f5ca91e0d52" },
-  "plenary.nvim": { "branch": "master", "commit": "8aad4396840be7fc42896e3011751b7609ca4119" },
+  "nvim-tree.lua": { "branch": "master", "commit": "ddd1d6eb21c45433bdc65cc8015f2457998f2bf2" },
+  "nvim-web-devicons": { "branch": "master", "commit": "beb6367ab8496c9e43f22e0252735fdadae1872d" },
+  "plenary.nvim": { "branch": "master", "commit": "5129a3693c482fcbc5ab99a7706ffc4360b995a0" },
   "telescope.nvim": { "branch": "master", "commit": "6312868392331c9c0f22725041f1ec2bef57c751" }
 }
\ No newline at end of file
diff --git a/lua/core/mappings.lua b/lua/core/mappings.lua
index a37f369..c1ed378 100644
--- a/lua/core/mappings.lua
+++ b/lua/core/mappings.lua
@@ -1,5 +1,3 @@
 vim.g.mapleader = " "
--- open file browser
-vim.keymap.set("n", "<leader>e", vim.cmd.Ex)
 -- lazy
 vim.keymap.set("n", "<leader>l", vim.cmd.Lazy)
diff --git a/lua/plugins/nvim-tree.lua b/lua/plugins/nvim-tree.lua
new file mode 100644
index 0000000..44fe0b7
--- /dev/null
+++ b/lua/plugins/nvim-tree.lua
@@ -0,0 +1,17 @@
+return {
+  'nvim-tree/nvim-tree.lua',
+  version = '*',
+  lazy = false,
+  dependencies = { 'nvim-tree/nvim-web-devicons' },
+  config = function()
+    vim.g.loaded_netrw = 1
+    vim.g.loaded_netrwPlugin = 1
+    vim.opt.termguicolors = true
+
+    require('nvim-tree').setup()
+
+    local api = require('nvim-tree.api')
+    vim.keymap.set('n', '<leader>e', api.tree.open)
+    vim.keymap.set('n', '<leader>E', api.tree.close)
+  end
+}