diff --git a/plugin/mappings.vim b/plugin/mappings.vim
index 80b7d91..ae50c62 100644
--- a/plugin/mappings.vim
+++ b/plugin/mappings.vim
@@ -5,6 +5,7 @@ nnoremap <silent> <leader>gd <Plug>(coc-definition)
 nnoremap <silent> <leader>gt <Plug>(coc-type-definition)
 nnoremap <silent> <leader>sd <Plug>(coc-diagnostic-info)
 nnoremap <silent> <leader>gr <Plug>(coc-references)
+nnoremap <silent> <leader>gu <Plug>(coc-references-used)
 nnoremap <silent> K :call do#show_documentation()<CR>
 nnoremap <silent> <C-n> <Plug>(coc-diagnostic-next)
 nnoremap <silent> <C-p> <Plug>(coc-diagnostic-prev)