diff --git a/nix/base-system/init.lua b/nix/base-system/init.lua
index 4550848..778709f 100644
--- a/nix/base-system/init.lua
+++ b/nix/base-system/init.lua
@@ -503,9 +503,15 @@ local harpoon = require('harpoon')
 
 harpoon:setup()
 
-require('lean').setup{
+local lean = require'lean'
+
+lean.setup{
   lsp = {
       on_attach = function(client, bufnr)
+        local opts = { buffer = bufnr }
+        vim.keymap.set({ "n", "v" }, "<Leader>ti", function () vim.cmd("LeanInfoviewToggle") end, opts)
+        vim.keymap.set({ "n", "v" }, "<Leader>sg", function () vim.cmd("LeanGoal") end, opts)
+        vim.keymap.set({ "n", "v" }, "<Leader>stg", function () vim.cmd("LeanTermGoal") end, opts)
       end
   },
   mappings = true,