diff --git a/vim/.config/vim/vimrc b/vim/.config/vim/vimrc
index a90058b..4b20b28 100644
--- a/vim/.config/vim/vimrc
+++ b/vim/.config/vim/vimrc
@@ -69,6 +69,9 @@ au FileType markdown setlocal tabstop=4 expandtab shiftwidth=4 softtabstop=4 wra
 " typing idate inserts the current date
 iab idate <c-r>=strftime("%Y-%m-%d")<cr>
 
+" insert triple backticks for markdown code blocks with Ctrl-b
+inoremap <C-b> ```<CR>```<Esc>O
+
 " use \ toc to insert a table of contents for markdown from the current line to EOF
 " nmap <leader>toc <cmd>.put =execute('.,$write !gh-md-toc --hide-header --hide-footer')<cr>
 nmap <leader>toc :put =system('gh-md-toc --hide-header --hide-footer --indent=4', getline('.', '$'))<cr>