diff --git a/scripts/docs/generate_versioned_docs.sh b/scripts/docs/generate_versioned_docs.sh
new file mode 100755
index 0000000..4d1bec1
--- /dev/null
+++ b/scripts/docs/generate_versioned_docs.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+#
+# Copyright 2018 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generate a versioned documentation tree.
+#
+# Run this script from a git checkout of a release tag. This script will infer
+# the tag and create the documentation tree with the correct tag injected into
+# the static pages, archive the tree, and copy it to Google Cloud Storage.
+#
+# This only needs to be done once per release. This script is non-destructive.
+#
+# TODO(jingwen): Automate this into the release pipeline.
+
+set -eu
+
+function log_info() {
+  echo "[Info]" $@
+}
+
+readonly SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# Unless we're in a tag (e.g. 0.20.0), set DOC_VERSION to master.
+readonly DOC_VERSION=$(git describe --tags --exact-match 2>/dev/null || echo "NOT_A_RELEASE")
+
+if [[ $DOC_VERSION == "NOT_A_RELEASE" ]]
+then
+  log_info "You are currently in the branch: `git rev-parse --abbrev-ref HEAD`"
+  log_info "Please run this script from a git checkout of a release tag, e.g. git checkout 0.20.0"
+  log_info "See the valid list of tags with 'git tag'"
+  exit 1
+fi
+
+function cleanup() {
+  mv $SCRIPT_DIR/../../site/_config.yml{.bak,}
+}
+
+read -p "You're going to generate the docs for $DOC_VERSION. Continue? <y/n> " prompt
+if [[ $prompt =~ [yY](es)* ]]
+then
+  # Modify the "version" Jekyll variable so all links in anchor tags are generated
+  # with the injected version.
+  sed -i.bak "s/master/$DOC_VERSION/" $SCRIPT_DIR/../../site/_config.yml
+  trap cleanup EXIT
+
+  bazel build //site:jekyll-tree --action_env=DOC_VERSION=$DOC_VERSION
+
+  # -n: no-clobber; prevent overwriting existing archives to be non-destructive.
+  # There should be no need to delete existing archives once it's uploaded. But
+  # should there be such a need, please file an issue.
+  #
+  # -a public-read: set the default ACL for uploaded archives to public-read for Bazel to download it.
+  gsutil cp -n -a public-read $SCRIPT_DIR/../../bazel-genfiles/site/jekyll-tree.tar gs://bazel-mirror/bazel_versioned_docs/jekyll-tree-$DOC_VERSION.tar
+
+  log_info "Done."
+  log_info "Now, please add \"$DOC_VERSION\" to the doc_versions list in <workspace>/site/_config.yml."
+  log_info "Please also add \"$DOC_VERSION\" to <workspace>/scripts/docs/doc_versions.bzl."
+fi