diff --git a/INSTALL b/INSTALL
index f31ac505..bc418713 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
                                                               -*- org -*-
 #+TITLE: Building and Installing GNU Mes
 
-Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+Copyright © 2016,2017,2018,2019,2021 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
@@ -26,7 +26,7 @@ similar way.
    #+END_SRC
 
 *** Other GNU/Linux
-  - [[https://savannah.gnu.org/projects/mescc-tools/][mescc-tools]], 0.7.0 is known to work.
+  - [[https://savannah.gnu.org/projects/mescc-tools/][mescc-tools]], 1.0.1 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.
@@ -79,8 +79,8 @@ The bootstrap build is part of Guix, see
 https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/commencement.scm
 
 ** Prerequisites
-  - [[https://savannah.gnu.org/projects/mescc-tools/][mescc-tools]], 0.6.1 is known to work.
-  - [[https://savannah.gnu.org/projects/nyacc][Nyacc]], 0.93.0 is known to work.
+  - [[https://savannah.gnu.org/projects/mescc-tools/][mescc-tools]], 1.0.1 is known to work.
+  - [[https://savannah.gnu.org/projects/nyacc][Nyacc]], 1.00.2 is known to work.
 
 ** Build it
 
diff --git a/build-aux/build-scaffold.sh b/build-aux/build-scaffold.sh
index 911e8cde..c8377a18 100755
--- a/build-aux/build-scaffold.sh
+++ b/build-aux/build-scaffold.sh
@@ -79,9 +79,9 @@ else
 fi
 
 trace "HEX2       ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0exit-42.hex2" $HEX2\
-      --LittleEndian\
+      --little-endian\
       $stage0_cpu_flag\
-      --BaseAddress 0x1000000\
+      --base-address 0x1000000\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0header.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0exit-42.hex2\
       --exec_enable\
@@ -93,9 +93,9 @@ trace "TEST       0exit-42"
 [ $r = 42 ]
 
 trace "HEX2       ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-body-exit-42.hex2" $HEX2\
-      --LittleEndian\
+      --little-endian\
       $stage0_cpu_flag\
-      --BaseAddress 0x1000000\
+      --base-address 0x1000000\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-header.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-body-exit-42.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-footer-single-main.hex2\
@@ -120,9 +120,9 @@ trace "TEST       hello-mes"
 [ $r = 0 ]
 
 trace "HEX2       ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0hello-mes.hex2" $HEX2\
-      --LittleEndian\
+      --little-endian\
       $stage0_cpu_flag\
-      --BaseAddress 0x1000000\
+      --base-address 0x1000000\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0header.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-0hello-mes.hex2\
       --exec_enable\
@@ -134,9 +134,9 @@ trace "TEST       0hello-mes"
 [ $r = 0 ]
 
 trace "HEX2       ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-body-hello-mes.hex2" $HEX2\
-      --LittleEndian\
+      --little-endian\
       $stage0_cpu_flag\
-      --BaseAddress 0x1000000\
+      --base-address 0x1000000\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-header.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-body-hello-mes.hex2\
       -f ${srcdest}lib/$mes_kernel/$mes_cpu-mes/elf$mes_bits-footer-single-main.hex2\
diff --git a/doc/mes.texi b/doc/mes.texi
index c3fbf3f5..1e16e5ad 100644
--- a/doc/mes.texi
+++ b/doc/mes.texi
@@ -512,7 +512,7 @@ later, including 2.2.x and 3.0.x,
 @item @url{http://www.gnu.org/software/make/, GNU Make}.
 @item @url{https://savannah.gnu.org/projects/nyacc/, NYACC}, version 1.00.2,
 @item @url{http://gcc.gnu.org, GCC's gcc}, version 2.95.3 or later, including 10.2.0,
-@item @url{https://savannah.gnu.org/projects/mescc-tools/, mescc-tools}, version 0.7.0 or later,
+@item @url{https://savannah.gnu.org/projects/mescc-tools/, mescc-tools}, version 1.0.1 or later,
 @end itemize
 
 @cindex Guile, compatibility
@@ -541,8 +541,8 @@ Bootstrapping Mes depends on the following packages:
 
 @itemize
 @item a POSIX-compatible shell
-@item @url{https://github.com/oriansj/mescc-tools/, mescc-tools}, version 0.6.1 or later.
-@item @url{https://savannah.gnu.org/projects/nyacc/, NYACC}, 0.93.0 or later, including 0.99.0.
+@item @url{https://github.com/oriansj/mescc-tools/, mescc-tools}, version 1.0.1 or later.
+@item @url{https://savannah.gnu.org/projects/nyacc/, NYACC}, version 1.00.2,
 @end itemize
 
 @node Running the Test Suites,  , Bootstrap Requirements, Installation