diff --git a/docs/AUTHORS.txt b/docs/AUTHORS.txt
index 5bffc7f39..0eaf54d83 100644
--- a/docs/AUTHORS.txt
+++ b/docs/AUTHORS.txt
@@ -6,7 +6,7 @@ Copyright (c) 2002-2023
 Various contributors (see below, and CHANGES.txt)
 https://tuxpaint.org/
 
-June 17, 2002 - April 20, 2023
+June 17, 2002 - April 22, 2023
 
 * Design and Coding:
 
@@ -1172,7 +1172,7 @@ June 17, 2002 - April 20, 2023
   * Corrections to allow "make --shuffle" (GNU Make feature) work
     Philipp Rösner <rndxelement@protonmail.com>
 
-  * Mac OS X coding and builds
+  * macOS (previously Mac OS X / OS X) coding and builds
     Mark K. Kim <markuskimius@gmail.com>
     Martin Fuhrer <mfuhrer@users.sourceforge.net>
     Darrell Walisser <walisser@mac.com>  [retired]
@@ -1206,6 +1206,9 @@ June 17, 2002 - April 20, 2023
   * FreeBSD packages
     Alejandro Pulver <alejandro@varnet.biz>
 
+  * Flatpak packages
+    Will Thompson <https://sourceforge.net/u/wjjjjt/profile/>
+
   * Sharp Zaurus PDA packages
     ONO Tetsu <ono_tetsu@ybb.ne.jp>