diff --git a/lua/option.lua b/lua/option.lua
index 2646c88..7ba4116 100644
--- a/lua/option.lua
+++ b/lua/option.lua
@@ -35,6 +35,8 @@ vim.cmd [[colorscheme sonokai]]
 -- Set completeopt to have a better completion experience
 vim.o.completeopt = 'menuone,noselect'
 
+vim.o.colorcolumn = '80'
+
 -- [[ Basic Keymaps ]]
 -- Set <space> as the leader key
 -- See `:help mapleader`