diff --git a/lisp/ob-abc.el b/lisp/ob-abc.el
index d9fef6ac2..4c9e83525 100644
--- a/lisp/ob-abc.el
+++ b/lisp/ob-abc.el
@@ -4,7 +4,7 @@
 
 ;; Author: William Waites
 ;; Keywords: literate programming, music
-;; Homepage: http://www.tardis.ed.ac.uk/wwaites
+;; Homepage: https://www.tardis.ed.ac.uk/~wwaites
 
 ;; This file is part of GNU Emacs.