diff --git a/debian/changelog b/debian/changelog
index c37e00c..146fe69 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -13,6 +13,8 @@
   * Use "set -e" instead of "#!/bin/sh -e" in maintainer scripts.
   * Declare compliance with Debian Policy 3.9.8. (No further changes.)
   * Apply "wrap-and-sort -a".
+  * Convert debian/copyright to machine-readable DEP5 format and add
+    myself.
 
  -- Axel Beckert <abe@debian.org>  Sat, 08 Oct 2016 00:33:40 +0200
 
diff --git a/debian/copyright b/debian/copyright
index 083df12..52e679e 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,15 +1,13 @@
-This package was debianized by Paweł Więcek <coven@debian.org> on
-Thu, 29 May 1997 23:59:31 +0200.
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Source: http://www.ibiblio.org/pub/Linux/system/admin/idle/
+Comment: It was originally written by Chris Ausbrooks and downloaded
+ from the source mentioned above, but was subsequently heavily
+ rewritten for Debian.
 
-It was originally written by Chris Ausbrooks <fish@bucket.ualr.edu>
-and downloaded from
- ftp://sunsite.unc.edu/pub/Linux/system/Admin/Slay.1.2.tar.gz
-Subsequently it was heavily rewritten for Debian.
-
-Copyright:
- Copyright (C) 1997-2003 by Chris Ausbrooks <fish@bucket.ualr.edu>
- Copyright (C) 2004-2008 by Paweł Więcek <coven@debian.org>
-
-License:
- This is a free software distributed according to terms of GNU GPL (see
- /usr/share/common-licenses/GPL)
+Files: *
+Copyright: 1997-2003 Chris Ausbrooks <fish@bucket.ualr.edu>
+           2004-2008 Paweł Więcek <coven@debian.org>
+           2016      Axel Beckert <abe@debian.org>
+License: GPL
+ This is a free software distributed according to terms of GNU GPL. (See
+ "/usr/share/common-licenses/GPL".)