diff --git a/AUTHORS b/AUTHORS
index 22a328b3..b133d733 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -13,6 +13,8 @@ Additions and fixes throughout
 Jeremiah Orians <jeremiah@pdp10.guru>
 lib/stdio/fopen.c (first simple version of fopen)
 scaffold/tests/98-fopen.c
+Initial work on elf headers:
+lib/linux/x86-mes/elf32-header.hex2 and similar
 
 Han-Wen Nienhuys <hanwen@xs4all.nl>
 lib/string/memmem.c (_memmem, memmem)
@@ -81,6 +83,10 @@ lib/mach/msg.c
 lib/mach/mach-init.c
 lib/mach/*.S
 
+M2-Planet dependencies
+lib/m2/x86/x86_defs.M1
+lib/m2/x86/ELF-i386-debug.hex2
+
 * legalese
 Copyright © 2016,2017,2018,2019,2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>