diff --git a/README.md b/README.md
index 75fd6ce..777ae4d 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,8 @@ The calendar implements the FullCalendar plugin, and the email signup is powered
 
 	in terminal and browse to `http://localhost:4000`. When the server boots up, you should see the columbiaspace.org website. Any changes you make to the source files will be automatically updated on this server.
 
+If you need to update your packages according to the Gemfile, just run `bundle` (e.g. somebody else updates packages in the Gemfile and you need to get that same version, without messing with updating other packages).
+
 ## Troubleshooting Tips
 
 *menu order is determined by the HTML file names within the corresponding folder