diff --git a/lazy-lock.json b/lazy-lock.json
index 3c24758..8950109 100644
--- a/lazy-lock.json
+++ b/lazy-lock.json
@@ -42,6 +42,7 @@
   "nvim-web-devicons": { "branch": "master", "commit": "ade34ca7d19543904b28b903e606be8930fb9ee3" },
   "plenary.nvim": { "branch": "master", "commit": "9d81624fbcedd3dd43b38d7e13a1e7b3f873d8cd" },
   "smart-splits.nvim": { "branch": "master", "commit": "fdd158ce7554dc830fb86e0fe952cd9476cdf726" },
+  "symbols-outline.nvim": { "branch": "master", "commit": "512791925d57a61c545bc303356e8a8f7869763c" },
   "telescope.nvim": { "branch": "master", "commit": "203bf5609137600d73e8ed82703d6b0e320a5f36" },
   "todo-comments.nvim": { "branch": "main", "commit": "077c59586d9d0726b0696dc5680eb863f4e04bc5" },
   "toggleterm.nvim": { "branch": "main", "commit": "2a787c426ef00cb3488c11b14f5dcf892bbd0bda" },
diff --git a/lua/plugins/ui.lua b/lua/plugins/ui.lua
index a194e06..109aa01 100644
--- a/lua/plugins/ui.lua
+++ b/lua/plugins/ui.lua
@@ -187,4 +187,13 @@ return {
 	--      { "<c-b>", function() if not require("noice.lsp").scroll(-4) then return "<c-b>" end end, silent = true, expr = true, desc = "Scroll backward", mode = {"i", "n", "s"}},
 	--    },
 	-- },
+
+	-- simbol outline
+	{
+		"simrat39/symbols-outline.nvim",
+		event = "BufRead",
+		config = function()
+			require("symbols-outline").setup()
+		end,
+	},
 }
diff --git a/lua/user/whichkey.lua b/lua/user/whichkey.lua
index 9614edb..d15e618 100644
--- a/lua/user/whichkey.lua
+++ b/lua/user/whichkey.lua
@@ -392,6 +392,7 @@ local mappings = {
 		l = { "<cmd>Lazy log<cr>", "Log" },
 		d = { "<cmd>Lazy debug<cr>", "Debug" },
 	},
+	["o"] = { "<cmd>SymbolsOutline<cr>", "Symbol Outline" },
 }
 
 which_key.setup(setup)