diff --git a/lua/plugins/completions.lua b/lua/plugins/completions.lua
index 108f68d..57aab3b 100644
--- a/lua/plugins/completions.lua
+++ b/lua/plugins/completions.lua
@@ -89,11 +89,19 @@ return {
           require('luasnip').lsp_expand(args.body)
         end
       },
+
       mapping = cmp.mapping.preset.insert({
-        ['<C-p>'] = cmp.mapping.select_prev_item(),
-        ['<C-n>'] = cmp.mapping.select_next_item(),
+        -- Open completion menu/confirm completion
+        ['<C-Space>'] = cmp.mapping.complete(),
         ['<C-l>'] = cmp.mapping.confirm({ select = true }),
+        -- Select completion from menu
+        ['<C-n>'] = cmp.mapping.select_next_item(),
+        ['<C-p>'] = cmp.mapping.select_prev_item(),
+        -- Scroll documentation of selected completion item
+        ['<C-d>'] = cmp.mapping.scroll_docs(4),
+        ['<C-u>'] = cmp.mapping.scroll_docs(-4),
       }),
+
       sources = {
         { name = 'luasnip' },
         { name = 'nvim_lsp' },