diff --git a/autoload/vundle/installer.vim b/autoload/vundle/installer.vim
index 472271a3..6a4be506 100644
--- a/autoload/vundle/installer.vim
+++ b/autoload/vundle/installer.vim
@@ -407,6 +407,7 @@ func! s:make_sync_command(bang, bundle) abort
 
     let cmd_parts = [
                 \ 'cd '.vundle#installer#shellesc(a:bundle.path()),
+                \ 'git tag -f vundle-'.strftime('%Y%m%d-%H%M'),
                 \ 'git pull',
                 \ 'git submodule update --init --recursive',
                 \ ]
diff --git a/doc/vundle.txt b/doc/vundle.txt
index 81a5f66f..82f2582c 100644
--- a/doc/vundle.txt
+++ b/doc/vundle.txt
@@ -277,6 +277,16 @@ To update specific plugins, write their names separated by space:
 or >
   :PluginUpdate vim-surround vim-fugitive
 
+The command `git tag` will be used to tag the commit that was used before any 
+update (i.e. before `git pull` is run). The tag is named `update-<strftime>` 
+(today's date and time).  If a plugin breaks after update, go to its 
+directory, check for the latest tag using `git tag` and run
+
+  `git checkout vundle-<somedatetime> && \`
+  `git submodule update --init --recursive`
+
+Then mark it as 'pinned' in `.vimrc`.
+
 3.5 SEARCHING PLUGINS ~
                                       *vundle-plugins-search* *:PluginSearch*
 >