diff --git a/emacs/.emacs.d/init.org b/emacs/.emacs.d/init.org
index 32bcd97..f368073 100644
--- a/emacs/.emacs.d/init.org
+++ b/emacs/.emacs.d/init.org
@@ -1325,6 +1325,14 @@
      (add-hook 'twig-mode-hook (turn-off auto-fill-mode))
    #+END_SRC
 
+** Ruby
+
+   Turn on =abbrev-mode= in Ruby buffers.
+
+   #+BEGIN_SRC emacs-lisp
+     (add-hook 'ruby-mode-hook 'abbrev-mode)
+   #+END_SRC
+
 * Minor mode customization
 
   Many minor modes also offer a bit of customization possibilities.