diff --git a/lua/custom-autocmd.lua b/lua/custom-autocmd.lua
index b3ec858..c375113 100644
--- a/lua/custom-autocmd.lua
+++ b/lua/custom-autocmd.lua
@@ -54,6 +54,13 @@ api.nvim_create_autocmd({ "BufWritePre" }, {
   end,
 })
 
+api.nvim_create_autocmd({ "BufWritePre" }, {
+  pattern = {"*.c", "*.cc", "*.cpp", "*.h", "*.rs", "*.py"},
+  callback = function()
+    vim.lsp.buf.format { asnyc = false }
+  end,
+})
+
 -- Automatically reload the file if it is changed outside of Nvim, see https://unix.stackexchange.com/a/383044/221410.
 -- It seems that `checktime` does not work in command line. We need to check if we are in command
 -- line before executing this command, see also https://vi.stackexchange.com/a/20397/15292 .