diff --git a/assets/shell/bump-version.sh b/assets/shell/bump-version.sh
new file mode 100755
index 0000000..73ef94a
--- /dev/null
+++ b/assets/shell/bump-version.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+#
+
+RELEASE_DEPS="rsync sed";
+
+rc() {
+	local _cmd="${1}"; shift;
+	printf "%s >>> %s %s\n" "$(date +"%d-%^b-%Y %H:%M:%S")" "${_cmd}" "${*}";
+	"${_cmd}" "${@}";
+};
+
+usage() {
+	echo "usage: ${0} [-h] old_version new_version" >&2;
+	echo "       -h.........: show this screen" >&2;
+};
+
+main() {
+	local _opt="" _version_new="" _version_old="";
+	while getopts hv _opt; do
+	case "${_opt}" in
+	h) usage; exit 0; ;;
+	*) usage; exit 1; ;;
+	esac; done;
+	shift $((${OPTIND}-1));
+	if [ -z "${1}" ]; then
+		echo "error: empty or missing old version number argument" >&2; usage; exit 1;
+	elif [ -z "${2}" ]; then
+		echo "error: empty or missing new version number argument" >&2; usage; exit 1;
+	else
+		_version_old="${1}"; _version_new="${2}";
+	fi;
+	for _cmd in ${RELEASE_DEPS_CMD}; do
+		if ! which "${_cmd}" >/dev/null; then
+			echo "error: missing prerequisite command \`${_cmd}'";
+			exit 1;
+		fi;
+	done;
+	rc sed -i"" '/"version":/s/\("version":\s*\)"'"${_version_old}"'"/\1"'"${_version_new}"'"/'		\
+		asciiblaster-cordoba/package.json								\
+		asciiblaster-cordoba/package-lock.json								\
+		asciiblaster-nw/package.json									\
+		asciiblaster-nw/package-lock.json;
+	rc sed -i"" '/version="/s/\(version=\)"'"${_version_old}"'"/\1"'"${_version_new}"'"/'			\
+		asciiblaster-cordoba/config.xml;
+	rc sed -i"" '/<title>[^<]\+ v/s/\(<title>[^<]\+ v\)'"${_version_old}"'\(<\)/\1'"${_version_new}"'\2/'	\
+		index.html;
+	rc rsync -aiLPv --delete										\
+		asciiblaster-cordoba/www/									\
+		asciiblaster-cordoba/platforms/android/app/src/main/assets/www/;
+	rc git add asciiblaster-cordoba/platforms/android/app/src/main/assets/www;
+	rc git commit -avm "Bump to v${_version_new}.";
+};
+
+set -o errexit -o noglob;
+main "${@}";
+
+# vim:foldmethod=marker sw=8 ts=8 tw=120