diff --git a/bin/migration_scripts/zinc2gallium.sh b/bin/migration_scripts/zinc2gallium.sh
new file mode 100644
index 0000000000000000000000000000000000000000..c54b7e36433a9af9f3fc79673d1ccf1468c103b0
--- /dev/null
+++ b/bin/migration_scripts/zinc2gallium.sh
@@ -0,0 +1,186 @@
+#!/bin/bash
+##########################################################################
+# #
+# This file is part of Frama-C. #
+# #
+# Copyright (C) 2007-2025 #
+# CEA (Commissariat à l'énergie atomique et aux énergies #
+# alternatives) #
+# #
+# you can redistribute it and/or modify it under the terms of the GNU #
+# Lesser General Public License as published by the Free Software #
+# Foundation, version 2.1. #
+# #
+# It 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 Lesser General Public License for more details. #
+# #
+# See the GNU Lesser General Public License version 2.1 #
+# for more details (enclosed in the file licenses/LGPLv2.1). #
+# #
+##########################################################################
+
+#
+# Converts a Frama-C plugin from Frama-C 30 Zinc to Frama-C 31 Gallium,
+# on a best-efforts basis (no guarantee that the result is fully compatible).
+#
+# known missing features:
+# - doesn't follow symbolic links to directories
+
+DIR=
+
+# verbose on by default
+VERBOSE="v"
+
+# test once if sed supports -i (BSD/macOS does not)
+SED_HAS_I=$(sed --help 2>/dev/null | grep '\-i' 2>/dev/null)
+
+# [sedi file expressions] runs 'sed -i expressions' on the specified file;
+# if '-i' is not supported, creates a temporary file and overwrites the
+# original, like '-i' does.
+sedi ()
+{
+ file="$1"
+ shift
+ if [ -n "$SED_HAS_I" ]; then
+ sed -i "$@" "$file"
+ else
+ # option '-i' is not recognized by sed: use a tmp file
+ new_temp=`mktemp /tmp/frama-c.XXXXXXX` || exit 1
+ sed "$@" "$file" > "$new_temp"
+ mv -f "$new_temp" "$file"
+ fi
+}
+
+dirs ()
+{
+ if [ -z "$DIR" ]; then
+ DIR=.
+ fi
+}
+
+# [safe_goto d1 d2 cmd] goes to d1, runs cmd, and returns to d2
+safe_goto ()
+{
+ dir="$1"
+ cd "$dir"
+ $3
+ cd "$2"
+}
+
+goto ()
+{
+ if [ -d "$1" ]; then
+ safe_goto "$1" "$2" "$3"
+ else
+ echo "Directory '$1' does not exist. Omitted."
+ fi
+}
+
+process_file ()
+{
+ file="$1"
+ if [ "$VERBOSE" ]; then
+ echo "Processing file $file"
+ fi
+ sedi "$file" \
+ -e 's/Cil\.bitfield_attribute_name/Ast_attributes.bitfield_attribute_name/g' \
+ -e 's/Cil\.anonymous_attribute_name/Ast_attributes.anonymous_attribute_name/g' \
+ -e 's/Cil\.anonymous_attribute/Ast_attributes.anonymous_attribute/g' \
+ -e 's/Cil\.frama_c_ghost_else/Ast_attributes.frama_c_ghost_else/g' \
+ -e 's/Cil\.frama_c_ghost_formal/Ast_attributes.frama_c_ghost_formal/g' \
+ -e 's/Cil\.frama_c_init_obj/Ast_attributes.frama_c_init_obj/g' \
+ -e 's/Cil\.frama_c_mutable/Ast_attributes.frama_c_mutable/g' \
+ -e 's/Cil\.frama_c_inlined/Ast_attributes.frama_c_inlined/g' \
+ -e 's/Cil\.attributeName/Ast_attributes.attribute_name/g' \
+ -e 's/Cil\.hasAttribute/Ast_attributes.has_attribute/g' \
+ -e 's/Cil\.addAttributes/Ast_attributes.add_attributes/g' \
+ -e 's/Cil\.dropAttribute/Ast_attributes.drop_attribute/g' \
+ -e 's/Cil\.dropAttributes/Ast_attributes.drop_attributes/g' \
+ -e 's/Cil\.findAttribute/Ast_attributes.find_attribute/g' \
+ -e 's/Cil\.filterAttributes/Ast_attributes.filter_attributes/g' \
+ -e 's/Cil\.registerAttribute/Ast_attributes.register_attribute/g' \
+ -e 's/Cil\.removeAttribute/Ast_attributes.remove_attribute/g' \
+ -e 's/Cil\.attributeClass/Ast_attributes.get_attribute_class/g' \
+ -e 's/Cil\.isKnownAttribute/Ast_attributes.is_known_attribute/g' \
+ -e 's/Cil\.partitionAttributes/Ast_attributes.partition_attributes/g' \
+ -e 's/Cil\.filter_qualifier_attributes/Ast_attributes.filter_qualifier_attributes/g' \
+ -e 's/Cil\.splitArrayAttributes/Ast_attributes.split_array_attributes/g' \
+ -e 's/Cil\.separateStorageModifiers/Ast_attributes.split_storage_modifier/g'
+ # this line left empty on purpose
+}
+
+apply_one_dir ()
+{
+ if [ "$VERBOSE" ]; then
+ echo "Processing directory `pwd`"
+ fi
+ for f in $(find . -maxdepth 1 -type f -name "*.ml*" 2> /dev/null); do
+ process_file "$f"
+ done
+}
+
+apply_recursively ()
+{
+ apply_one_dir
+ while IFS= read -r -d $'\0' d; do
+ if [ "$d" = "." ]; then
+ continue
+ fi
+ safe_goto "$d" .. apply_recursively
+ done < <(find . -maxdepth 1 -type d -print0)
+}
+
+applying_to_list ()
+{
+ dirs
+ tmpdir=`pwd`
+ for d in $DIR; do
+ goto "$d" "$tmpdir" "$1"
+ done
+}
+
+help ()
+{
+ echo "Usage: $0 [options | directories]
+
+Options are:
+ -r | --recursive Check subdirectories recursively
+ -h | --help Display help message
+ -q | --quiet Quiet mode (i.e. non-verbose mode)
+ -v | --verbose Verbose mode (default)"
+ exit 0
+}
+
+error ()
+{
+ echo "$1.
+Do \"$0 -h\" for help."
+ exit 1
+}
+
+FN="apply_one_dir"
+
+parse_arg ()
+{
+ case $1 in
+ -r | --recursive) FN="apply_recursively";;
+ -h | -help ) help; exit 0;;
+ -q | --quiet ) VERBOSE=;;
+ -v | --verbose ) VERBOSE="v";;
+ -* ) error "Invalid option $1";;
+ * ) DIR="$DIR $1";;
+ esac
+}
+
+cmd_line ()
+{
+ for s in "$@"; do
+ parse_arg "$s"
+ done
+ applying_to_list $FN
+}
+
+cmd_line "$@"
+exit 0