diff --git a/config/nvim/lua/user/plugins/mason.lua b/config/nvim/lua/user/plugins/mason.lua
new file mode 100644
index 0000000..bed1ebf
--- /dev/null
+++ b/config/nvim/lua/user/plugins/mason.lua
@@ -0,0 +1,44 @@
+-- customize mason plugins
+return {
+  -- use mason-lspconfig to configure LSP installations
+  {
+    "williamboman/mason-lspconfig.nvim",
+    -- overrides `require("mason-lspconfig").setup(...)`
+    opts = function(_, opts)
+      -- add more things to the ensure_installed table protecting against community packs modifying it
+      opts.ensure_installed = require("astronvim.utils").list_insert_unique(opts.ensure_installed, {
+        "lua_ls",
+        "clangd",
+        "pyright",
+        "cssls",
+        "html",
+        "jsonls",
+      })
+    end,
+  },
+  -- use mason-null-ls to configure Formatters/Linter installation for null-ls sources
+  {
+    "jay-babu/mason-null-ls.nvim",
+    -- overrides `require("mason-null-ls").setup(...)`
+    opts = function(_, opts)
+      -- add more things to the ensure_installed table protecting against community packs modifying it
+      opts.ensure_installed = require("astronvim.utils").list_insert_unique(opts.ensure_installed, {
+        "prettier",
+        "stylua",
+        "clang-format",
+        "black",
+        "luacheck",
+      })
+    end,
+  },
+  {
+    "jay-babu/mason-nvim-dap.nvim",
+    -- overrides `require("mason-nvim-dap").setup(...)`
+    opts = function(_, opts)
+      -- add more things to the ensure_installed table protecting against community packs modifying it
+      opts.ensure_installed = require("astronvim.utils").list_insert_unique(opts.ensure_installed, {
+        -- "python",
+      })
+    end,
+  },
+}