diff --git a/resources/build-npm.js b/resources/build-npm.js
index 38793cac670..8a2b68ab87d 100644
--- a/resources/build-npm.js
+++ b/resources/build-npm.js
@@ -68,7 +68,10 @@ function buildPackageJSON() {
 
   if (preReleaseTag != null) {
     const [tag] = preReleaseTag.split('.');
-    assert(['alpha', 'beta', 'rc'].includes(tag), `"${tag}" tag is supported.`);
+    assert(
+      tag.startsWith('experimental-') || ['alpha', 'beta', 'rc'].includes(tag),
+      `"${tag}" tag is supported.`,
+    );
 
     assert(!packageJSON.publishConfig, 'Can not override "publishConfig".');
     packageJSON.publishConfig = { tag: tag || 'latest' };
diff --git a/src/__tests__/version-test.js b/src/__tests__/version-test.js
index 7d9a0acf0ce..ffa8d981e63 100644
--- a/src/__tests__/version-test.js
+++ b/src/__tests__/version-test.js
@@ -6,7 +6,9 @@ import { version, versionInfo } from '../version';
 describe('Version', () => {
   it('version', () => {
     expect(version).to.be.a('string');
-    expect(version).to.match(/^\d+\.\d+\.\d(-(alpha|beta|rc)\.\d+)?$/);
+    expect(version).to.match(
+      /^\d+\.\d+\.\d(-(alpha|beta|rc|(experimental-[\w-]+))\.\d+)?$/,
+    );
   });
 
   it('versionInfo', () => {