diff --git a/tools/publish-book.sh b/tools/publish-book.sh
deleted file mode 100755
index b1bb6227..00000000
--- a/tools/publish-book.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-# Copyright (c) 2023 Xu Shaohua <shaohua@biofan.org>. All rights reserved.
-# Use of this source is governed by General Public License that can be
-# found in the LICENSE file.
-
-# Build and release the book.
-
-set -xe
-
-mdbook build
-rsync --delete -ave "ssh -p ${ZU_SERVER_PORT}" book_out/ ${ZU_SERVER}/algs