diff --git a/CHEATSHEET.md b/CHEATSHEET.md
index 9e235b5..7f343f5 100644
--- a/CHEATSHEET.md
+++ b/CHEATSHEET.md
@@ -46,6 +46,7 @@ Heavily customized. Related blog post: https://lugh.ch/neovim-lessons-learned.ht
 
 - `Ctrl`+`j/k` scroll down/up through LSP suggestions
 - `K` show LSP context info
+- `Ctrl`+`o` show LSP completion menu
 - `gd` go to definition
 - `gr` show references of function
 - `grn` renames all refs of the symbol under cursor
diff --git a/CHEATSHEET.pdf b/CHEATSHEET.pdf
index ebfa14b..b60f777 100644
Binary files a/CHEATSHEET.pdf and b/CHEATSHEET.pdf differ
diff --git a/lua/weeheavy/plugins/lsp/blink.lua b/lua/weeheavy/plugins/lsp/blink.lua
index 2fa9599..66151f1 100644
--- a/lua/weeheavy/plugins/lsp/blink.lua
+++ b/lua/weeheavy/plugins/lsp/blink.lua
@@ -35,6 +35,7 @@ return {
             ["<C-c>"] = { "cancel", "fallback" },
             ["<C-n>"] = { "scroll_documentation_down" },
             ["<C-p>"] = { "scroll_documentation_up" },
+            ["<C-o>"] = { "show" }, -- show menu
         },
         appearance = {
             -- 'mono' (default) for 'Nerd Font Mono' or 'normal' for 'Nerd Font'