diff --git a/INSTALL b/INSTALL
index bed4666b..7cf3d2e4 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
                                                               -*- org -*-
 #+TITLE: Building and Installing GNU Mes
 
-Copyright © 2016,2017,2018,2019,2021,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+Copyright © 2016,2017,2018,2019,2021,2022,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 
   Copying and distribution of this file, with or without modification,
   are permitted in any medium without royalty provided the copyright
@@ -27,12 +27,12 @@ similar way.
 
 *** Other GNU/Linux
   - [[https://savannah.gnu.org/projects/mescc-tools/][mescc-tools]], 1.4.0 is known to work.
-  - [[https://github.com/oriansj/m2-planet][M2-Planet]] (optional), 1.9.0 is known to work.
+  - [[https://github.com/oriansj/m2-planet][M2-Planet]] (optional), 1.11.0 is known to work.
   - [[https://savannah.gnu.org/projects/nyacc][Nyacc]], 1.00.2 is known to work.
   - GNU Gcc, 7.5.0 is known to work.
-  - GNU Guile, version 3.0.4 is know to work.
+  - GNU Guile, version 3.0.4 is known to work.
   - SH, /bin/sh, GNU Bash 5.0.16 is known to work.
-  - GNU coreutils
+  - GNU coreutils.
   - sed, GNU sed 4.8 is known to work.
 
 ** Build it
diff --git a/doc/mes.texi b/doc/mes.texi
index 8f6fbd25..e77f3ffd 100644
--- a/doc/mes.texi
+++ b/doc/mes.texi
@@ -578,7 +578,7 @@ The following dependencies are optional:
 
 @itemize
 Support for building the bootstrap @file{bin/mes-m2} depends on
-@item @url{https://github.com/oriansj/m2-planet/, M2-Planet}, version 1.10.0.
+@item @url{https://github.com/oriansj/m2-planet/, M2-Planet}, version 1.11.0.
 @end itemize
 
 @cindex Guile, compatibility
@@ -608,7 +608,7 @@ Bootstrapping Mes depends on the following packages:
 @itemize
 @item a POSIX-compatible shell
 @item @url{https://savannah.gnu.org/projects/mescc-tools/, mescc-tools}, version 1.4.0,
-@item @url{https://github.com/oriansj/m2-planet/, M2-Planet}, version 1.10.0.
+@item @url{https://github.com/oriansj/m2-planet/, M2-Planet}, version 1.11.0.
 @item @url{https://savannah.gnu.org/projects/nyacc/, NYACC}, version 1.00.2,
 @end itemize