diff --git a/lua/plugins.lua b/lua/plugins.lua
index 086caea..8279610 100644
--- a/lua/plugins.lua
+++ b/lua/plugins.lua
@@ -47,10 +47,29 @@ return require('packer').startup(function()
 
 	-- LSP
 	use 'neovim/nvim-lspconfig'
+
+	-- LSP, DAP, linters and formatters
+	-- use 'jose-elias-alvarez/null-ls.nvim'
+	use {
+		'dense-analysis/ale',
+		config = function()
+			vim.cmd [[ g:ale_sign_column_always = 1 ]]
+		end
+	}
+
+	-- management for LSP, DAP, linters and formatters
 	use {
 		'williamboman/mason.nvim',
 		config = function()
-			require('mason').setup()
+			require('mason').setup({
+				ui = {
+					icons = {
+						package_installed = "✓",
+						package_pending = "➜",
+						package_uninstalled = "✗"
+					}
+				}
+			})
 		end
 	}
 	use 'williamboman/mason-lspconfig.nvim'