diff --git a/.config/vim/vimrc.d/40-keys.vim b/.config/vim/vimrc.d/40-keys.vim
index 749c3e3..5500d14 100644
--- a/.config/vim/vimrc.d/40-keys.vim
+++ b/.config/vim/vimrc.d/40-keys.vim
@@ -262,3 +262,9 @@ vnoremap = =gv
 
 " Center search results
 noremap n zzn
+
+" Switch to lower/upper case
+nnoremap <leader><C-U> gUl
+vnoremap <leader><C-U> gU
+nnoremap <leader><C-L> gul
+vnoremap <leader><C-L> gu