diff --git a/utils/set-version.js b/utils/set-version.js
new file mode 100644
index 0000000..d671be2
--- /dev/null
+++ b/utils/set-version.js
@@ -0,0 +1,60 @@
+#!/usr/bin/env node
+/**
+ * Copyright 2019 Google Inc. All rights reserved.
+ * Modifications copyright (c) Microsoft Corporation.
+ *
+ * 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.
+ */
+
+// @ts-check
+
+import fs from 'fs';
+import path from 'path';
+import child_process from 'child_process';
+import { argv } from 'process';
+
+const __dirname = path.dirname(new URL(import.meta.url).pathname);
+
+const readJSON = async (filePath) => JSON.parse(await fs.promises.readFile(filePath, 'utf8'));
+const writeJSON = async (filePath, json) => {
+  await fs.promises.writeFile(filePath, JSON.stringify(json, null, 2) + '\n');
+}
+
+async function updatePackageJSON(dir, version) {
+  const packageJSONPath = path.join(dir, 'package.json');
+  const packageJSON = await readJSON(packageJSONPath);
+  console.log(`Updating ${packageJSONPath} to version ${version}`);
+  packageJSON.version = version;
+  await writeJSON(packageJSONPath, packageJSON);
+
+  // Run npm i to update package-lock.json
+  child_process.execSync('npm i', {
+    cwd: dir
+  });
+}
+
+async function setVersion(version) {
+  if (version.startsWith('v'))
+    throw new Error('version must not start with "v"');
+
+  const packageRoot = path.join(__dirname, '..');
+  await updatePackageJSON(packageRoot, version)
+  await updatePackageJSON(path.join(packageRoot, 'extension'), version)
+}
+
+if (argv.length !== 3) {
+  console.error('Usage: set-version <version>');
+  process.exit(1);
+}
+
+setVersion(argv[2]);
\ No newline at end of file