diff --git a/.config/nvim/lazy-lock.json b/.config/nvim/lazy-lock.json
index 41c85ea..18cf813 100644
--- a/.config/nvim/lazy-lock.json
+++ b/.config/nvim/lazy-lock.json
@@ -1,6 +1,5 @@
 {
   "action-hints.nvim": { "branch": "main", "commit": "ab10fef255dd4bc933c92d8f9969828f2f856e71" },
-  "aerial.nvim": { "branch": "master", "commit": "31fbd369bbbeb53080c4b1ead9e76be322725ef5" },
   "barbecue": { "branch": "main", "commit": "cd7e7da622d68136e13721865b4d919efd6325ed" },
   "cmp-buffer": { "branch": "main", "commit": "3022dbc9166796b644a841a02de8dd1cc1d311fa" },
   "cmp-nvim-lsp": { "branch": "main", "commit": "5af77f54de1b16c34b23cba810150689a3a90312" },
@@ -47,6 +46,7 @@
   "promise-async": { "branch": "main", "commit": "93540c168c5ed2b030ec3e6c40ab8bbb85e36355" },
   "renamer.nvim": { "branch": "master", "commit": "1614d466df53899f11dd5395eaac3c09a275c384" },
   "spelunker.vim": { "branch": "master", "commit": "a0bc530f62798bbe053905555a4aa9ed713485eb" },
+  "symbols-outline.nvim": { "branch": "master", "commit": "564ee65dfc9024bdde73a6621820866987cbb256" },
   "tabular": { "branch": "master", "commit": "339091ac4dd1f17e225fe7d57b48aff55f99b23a" },
   "tccs.nvim": { "branch": "master", "commit": "b0e36734b8e4c8e1e56533218076fe574c7a9d75" },
   "telescope.nvim": { "branch": "master", "commit": "776b509f80dd49d8205b9b0d94485568236d1192" },
diff --git a/.config/nvim/lua/keymap.lua b/.config/nvim/lua/keymap.lua
index 58580f6..76fed7d 100644
--- a/.config/nvim/lua/keymap.lua
+++ b/.config/nvim/lua/keymap.lua
@@ -59,8 +59,8 @@ m.cnoremap("w!!", 'execute "silent! write !sudo tee % >/dev/null" <bar> edit!',
 m.nnoremap("<leader>sa", ':%S//g<Left><Left>', 'Substitute: free form')
 m.nnoremap("<leader>ss", ':%S/\\<<C-r><C-w>\\>//g<Left><Left>', 'Substitute: word under cursor')
 
--- stevearc/aerial.nvim
-m.nmap('<F3>', ':AerialToggle!<CR>', 'CTags: toggle')
+-- simrat39/symbols-outline.nvim
+m.nmap('<F3>', ':SymbolsOutline<CR>', 'CTags: toggle')
 
 -- nvim-tree/nvim-tree.lua
 m.nmap("<F2>", ':NvimTreeToggle toggle<CR>', 'File tree: toggle')
diff --git a/.config/nvim/lua/plugins/aerial.lua b/.config/nvim/lua/plugins/aerial.lua
deleted file mode 100644
index 354e8c0..0000000
--- a/.config/nvim/lua/plugins/aerial.lua
+++ /dev/null
@@ -1,17 +0,0 @@
-return {
-  -- ctags like menu
-  {
-    'stevearc/aerial.nvim',
-    opts = {
-      layout = {
-        max_width = { 50, 0.2 },
-        min_width = 25,
-        resize_to_content = false,
-      },
-    },
-    dependencies = {
-      "nvim-treesitter/nvim-treesitter",
-      "nvim-tree/nvim-web-devicons"
-    },
-  }
-}
diff --git a/.config/nvim/lua/plugins/symbols-outline.lua b/.config/nvim/lua/plugins/symbols-outline.lua
new file mode 100644
index 0000000..54e1fe7
--- /dev/null
+++ b/.config/nvim/lua/plugins/symbols-outline.lua
@@ -0,0 +1,39 @@
+return {
+  -- ctags like menu
+  {
+    "simrat39/symbols-outline.nvim",
+    opts = {
+      width = 25,
+      symbols = {
+        File = { icon = Lsp_signs.File, hl = "@text.uri" },
+        Module = { icon = Lsp_signs.Module, hl = "@namespace" },
+        Class = { icon = Lsp_signs.Class, hl = "@type" },
+        Method = { icon = Lsp_signs.Method, hl = "@method" },
+        Property = { icon = Lsp_signs.Property, hl = "@method" },
+        Field = { icon = Lsp_signs.Field, hl = "@field" },
+        Constructor = { icon = Lsp_signs.Constructor, hl = "@constructor" },
+        Enum = { icon = Lsp_signs.Enum, hl = "@type" },
+        Interface = { icon = Lsp_signs.Interface, hl = "@type" },
+        Function = { icon = Lsp_signs.Function, hl = "@function" },
+        Variable = { icon = Lsp_signs.Variable, hl = "@constant" },
+        Constant = { icon = Lsp_signs.Constant, hl = "@constant" },
+        Key = { icon = Lsp_signs.Keyword, hl = "@type" },
+        EnumMember = { icon = Lsp_signs.EnumMember, hl = "@field" },
+        Struct = { icon = Lsp_signs.Struct, hl = "@type" },
+        Event = { icon = Lsp_signs.Event, hl = "@type" },
+        Operator = { icon = Lsp_signs.Operator, hl = "@operator" },
+        TypeParameter = { icon = Lsp_signs.TypeParameter, hl = "@parameter" },
+        Boolean = { icon = Lsp_signs.Boolean, hl = "@boolean" },
+        Null = { icon = Lsp_signs.Null, hl = "@type" },
+        Component = { icon = Lsp_signs.Component, hl = "@function" },
+        Fragment = { icon = Lsp_signs.Fragment, hl = "@constant" },
+        Object = { icon = Lsp_signs.Object, hl = "@type" },
+        Array = { icon = Lsp_signs.Array, hl = "@constant" },
+        Number = { icon = Lsp_signs.Number, hl = "@number" },
+        String = { icon = Lsp_signs.String, hl = "@string" },
+        Namespace = { icon = Lsp_signs.Namespace, hl = "@namespace" },
+        Package = { icon = Lsp_signs.Package, hl = "@namespace" },
+      },
+    },
+  },
+}
diff --git a/.config/nvim/lua/style.lua b/.config/nvim/lua/style.lua
index bdc880d..3464435 100644
--- a/.config/nvim/lua/style.lua
+++ b/.config/nvim/lua/style.lua
@@ -1,65 +1,75 @@
 -- set signs for various uses
-Space_sign = "·"
 Return_sign = ""
+Space_sign = "·"
 
 Error_sign = " "
-Warn_sign = " "
-Info_sign = " "
-Hint_sign = " "
 Hack_sign = " "
-Todo_sign = " "
+Hint_sign = " "
+Info_sign = " "
 Perfect_sign = " "
 Test_sign = " "
+Todo_sign = " "
+Warn_sign = " "
 
 Menu_signs = {
-  nvim_lsp = "",
-  path = "",
   buffer = "",
   luasnip = "",
+  nvim_lsp = "",
+  path = "",
 }
 
 Lsp_signs = {
-  Text = "",
-  Method = "",
-  Function = "φ",
+  Array = "",
+  Boolean = "⊥",
+  Class = "",
+  Color = "",
+  Component = "",
+  Constant = "π",
   Constructor = "",
+  Enum = "",
+  EnumMember = "",
+  Event = "",
   Field = "■",
-  Variable = "β",
-  Class = "",
+  File = "",
+  Folder = "",
+  Fragment = "",
+  Function = "φ",
   Interface = "",
-  Module = "",
-  Property = "",
-  Unit = "",
-  Value = "",
-  Enum = "",
   Keyword = "",
-  Snippet = "",
-  Color = "",
-  File = "",
+  Method = "",
+  Module = "",
+  Namespace = "",
+  Null = "∅",
+  Number = "#",
+  Object = "",
+  Operator = "",
+  Package = "",
+  Property = "",
   Reference = "",
-  Folder = "",
-  EnumMember = "",
-  Constant = "π",
+  Snippet = "",
+  String = "",
   Struct = "",
-  Event = "",
-  Operator = "",
-  TypeParameter = ""
+  Text = "",
+  TypeParameter = "",
+  Unit = "",
+  Value = "",
+  Variable = "β",
 }
 
 Install_signs = {
   package_installed = "",
   package_pending = "",
-  package_uninstalled = "✗"
+  package_uninstalled = "✗",
 }
 
 Git_signs = {
-  unstaged = "",
+  deleted = "",
+  ignored = "",
+  renamed = "",
   staged = "",
   unmerged = "",
-  renamed = "",
-  deleted = "",
+  unstaged = "",
   untracked = "",
-  ignored = "",
 }
 
 Lazy_signs = {
@@ -67,10 +77,16 @@ Lazy_signs = {
   config = " ",
   event = " ",
   ft = " ",
-  init = " ",
   import = " ",
+  init = " ",
   keys = " ",
   lazy = "󰒲 ",
+  list = {
+    "●",
+    "➜",
+    "",
+    "",
+  },
   loaded = " ",
   not_loaded = " ",
   plugin = " ",
@@ -78,19 +94,13 @@ Lazy_signs = {
   source = " ",
   start = " ",
   task = " ",
-  list = {
-    "●",
-    "➜",
-    "",
-    "",
-  }
 }
 
 Lualine_signs = {
-  modified = '',
-  readonly = '',
-  unnamed = '',
-  newfile = ''
+  modified = "",
+  newfile = "",
+  readonly = "",
+  unnamed = "",
 }
 
 vim.fn.sign_define(
@@ -112,7 +122,7 @@ vim.fn.sign_define(
 
 -- enable colorcolumn when textwidth is set
 vim.o.cursorline = true
-vim.opt_local.colorcolumn = '+' .. vim.fn.join(vim.fn.range(0,254), ',+')
+vim.opt_local.colorcolumn = "+" .. vim.fn.join(vim.fn.range(0, 254), ",+")
 -- alternatively highlight only one line for colorcolumn
 -- vim.o.colorcolumn = "-0"