diff --git a/plugins/cmp.nix b/plugins/cmp.nix
index 2923df7..507cbe9 100644
--- a/plugins/cmp.nix
+++ b/plugins/cmp.nix
@@ -14,6 +14,53 @@ _:
           
       # TODO: add this at luasnip:
       # { name = "luasnip", priority = 750 }
+
+      mapping = {
+        "<Up>" = "cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Select }";
+        "<Down>" = "cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Select }";
+        "<C-P>" = "cmp.mapping(function()
+          if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
+            cmp.select_prev_item { behavior = cmp.SelectBehavior.Insert }
+          else
+            cmp.complete()
+          end
+        end)";
+        "<C-N>" = "cmp.mapping(function()
+          if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
+            cmp.select_next_item { behavior = cmp.SelectBehavior.Insert }
+          else
+            cmp.complete()
+          end
+        end)";
+        "<C-K>" = "cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Insert }";
+        "<C-J>" = "cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Insert }";
+        "<C-U>" = "cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' })";
+        "<C-D>" = "cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' })";
+        "<C-Space>" = "cmp.mapping(cmp.mapping.complete(), { 'i', 'c' })";
+        "<C-Y>" = "cmp.config.disable";
+        "<C-E>" = "cmp.mapping { i = cmp.mapping.abort(), c = cmp.mapping.close() }";
+        "<CR>" = "cmp.mapping.confirm { select = false }";
+        "<Tab>" = "cmp.mapping(function(fallback)
+          if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
+            cmp.select_next_item()
+          elseif vim.snippet and vim.snippet.active { direction = 1 } then
+            vim.schedule(function() vim.snippet.jump(1) end)
+          elseif has_words_before() then
+            cmp.complete()
+          else
+            fallback()
+          end
+        end, { 'i', 's' })";
+        "<S-Tab>" = "cmp.mapping(function(fallback)
+          if (cmp.core.view:visible() or vim.fn.pumvisible() == 1) then
+            cmp.select_prev_item()
+          elseif vim.snippet and vim.snippet.active { direction = -1 } then
+            vim.schedule(function() vim.snippet.jump(-1) end)
+          else
+            fallback()
+          end
+        end, { 'i', 's' })";
+      };
     };
   };