diff --git a/nvim/.config/nvim/after/ftplugin/markdown.lua b/nvim/.config/nvim/after/ftplugin/markdown.lua
index acdb2f3..c52ab63 100644
--- a/nvim/.config/nvim/after/ftplugin/markdown.lua
+++ b/nvim/.config/nvim/after/ftplugin/markdown.lua
@@ -11,6 +11,19 @@ if require("core.util").is_available("which-key") then
 	})
 end
 
+-- add tasks w/ <C-x>
+map({ "i" }, "<C-x>", function()
+	local line = vim.api.nvim_get_current_line()
+	local cursor = vim.api.nvim_win_get_cursor(0)
+	-- remove existing prefixes if any
+	-- TODO: Improved matching for e.g. '- [ ]' already on line, or indented '-'
+	-- and add task on line below if line is already populated
+	local updated_line = line:gsub("^%s*[-*]%s*", "", 1)
+	vim.api.nvim_set_current_line(updated_line)
+	vim.api.nvim_win_set_cursor(0, { cursor[1], #updated_line })
+	vim.api.nvim_put({ "- [ ] " }, "c", true, true)
+end)
+
 if require("core.util").is_available("zk") and require("zk.util").notebook_root(vim.fn.expand("%:p")) ~= nil then
 	map("n", "<CR>", "<cmd>lua vim.lsp.buf.definition()<cr>", { silent = true })
 end