diff --git a/lua/znvim/options.lua b/lua/znvim/options.lua
index 342c3a6..274af18 100644
--- a/lua/znvim/options.lua
+++ b/lua/znvim/options.lua
@@ -73,3 +73,5 @@ vim.opt.foldcolumn = "4"
 vim.opt.foldlevel = 99
 vim.opt.foldlevelstart = 99
 vim.opt.fillchars = "eob: ,fold: ,foldopen:,foldsep: ,foldclose:"
+vim.opt.foldmethod = "expr"
+vim.opt.foldexpr = "nvim_treesitter#foldexpr()"
diff --git a/lua/znvim/plugins/treesitter.lua b/lua/znvim/plugins/treesitter.lua
new file mode 100644
index 0000000..c8fcfcc
--- /dev/null
+++ b/lua/znvim/plugins/treesitter.lua
@@ -0,0 +1,75 @@
+return {
+
+    { -- treesitter
+        "https://github.com/nvim-treesitter/nvim-treesitter",
+        build = ":TSUpdate",
+        event = "BufReadPre",
+        opts = {
+            highlight = { enable = true, },
+            indent = { enable = true },
+            ensure_installed = {
+                "asm",
+                "bash",
+                "bibtex",
+                "c",
+                "cmake",
+                "commonlisp",
+                "cpp",
+                "css",
+                "csv",
+                "cuda",
+                "d",
+                "devicetree",
+                "diff",
+                "dockerfile",
+                "erlang",
+                "elixir",
+                "heex",
+                "fennel",
+                "fortran",
+                "git_config", "git_rebase", "gitattributes", "gitcommit", "gitignore",
+                "haskell",
+                "html",
+                "http",
+                "javascript",
+                "json", "json5",
+                "julia",
+                "latex",
+                "llvm",
+                "lua", "luadoc",
+                "markdown", "markdown_inline",
+                "norg",
+                "objdump",
+                "passwd",
+                "python",
+                "regex",
+                "rst",
+                "rust",
+                "sql",
+                "ssh_config",
+                "systemverilog",
+                "tcl",
+                "toml",
+                "typst",
+                "verilog",
+                "vhdl",
+                "vim",
+                "vimdoc",
+                "xml",
+                "yaml",
+            },
+            incremental_selection = {
+                enable = true,
+                keymaps = {
+                    init_selection = "<C-space>",
+                    node_incremental = "<C-space>",
+                    scope_incremental = false,
+                    node_decremental = "<bs>",
+                },
+            },
+        },
+        config = function (_, opts)
+            require("nvim-treesitter.configs").setup(opts)
+        end
+    },
+}