diff --git a/autoload/conoline.vim b/autoload/conoline.vim
index 4ccc69c..984ebb1 100644
--- a/autoload/conoline.vim
+++ b/autoload/conoline.vim
@@ -26,6 +26,7 @@ function! conoline#disable() abort
   autocmd! conoline_only_active_window
   autocmd! conoline_color_insert
   autocmd! conoline_color_enable
+  autocmd! conoline_monitor_background_setting
   let s:enabled = 0
 endfunction
 
@@ -82,6 +83,12 @@ function! conoline#enable() abort
     autocmd Syntax,ColorScheme * call conoline#enable()
   augroup END
 
+  " Change light/dark when the background changes
+  augroup conoline_monitor_background_setting
+    autocmd!
+    autocmd OptionSet background :if &background == 'light' | execute "ConoLineColorLight" | else | execute "ConoLineColorDark" | endif
+  augroup END
+
   setlocal cursorline
   call s:normal()
   let s:enabled = 1