diff --git a/debian/changelog b/debian/changelog
index 56eea3b..80dab4c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -9,6 +9,7 @@ trader (7.20-2) unstable; urgency=low
   * Removed version numbers on build dependencies for Automake and
     Gettext: oldstable already has at least the required versions.
   * Changed Vcs-Git link to use HTTPS instead of Git protocol.
+  * Included copyright information for Gnulib files in debian/copyright.
   * Updated to Debian Policy 4.6.2 (no changes).
 
  -- John Zaitseff <J.Zaitseff@zap.org.au>  Wed, 28 Feb 2024 07:58:02 +1100
diff --git a/debian/copyright b/debian/copyright
index 13bb20d..33d6bba 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -15,13 +15,28 @@ Files: debian/*
 Copyright: 2011-2024, John Zaitseff <J.Zaitseff@zap.org.au>
 License: GPL-3+
 
+Files: lib/*
+Copyright: 1987-2024, Free Software Foundation, Inc.
+License: GPL-3+
+Comment:
+ Some files in this directory (from the Gnulib GNU Portability Library)
+ are licensed by the Free Software Foundation under LGPL-2.1+; other
+ files are under GPL-2+.  When combined with the remaining files from the
+ same Gnulib library, these inherit the overall GPL-3+ licence.
+
+Files:
+ lib/obsolete-strings.c
+ lib/xopen-source.h
+Copyright: 2018-2024, John Zaitseff <J.Zaitseff@zap.org.au>
+License: GPL-3+
+
 License: GPL-3+
  Star Traders is free software that is distributed under the terms of
  the GNU General Public License.  You can redistribute it and/or modify
  it under the terms of that License as published by the Free Software
  Foundation, either version 3 or (at your option) any later version.
  .
- This game is distributed in the hope that it will be useful, but
+ This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License in the file COPYING for more details.