diff --git a/website/docusaurus.config.js b/website/docusaurus.config.js
index 5c0e42d565c9..4577fa51293d 100644
--- a/website/docusaurus.config.js
+++ b/website/docusaurus.config.js
@@ -57,7 +57,10 @@ const isVersioningDisabled = !!process.env.DISABLE_VERSIONING || isI18nStaging;
   url: 'https://docusaurus.io',
   i18n: {
     defaultLocale: 'en',
-    locales: isI18nStaging
+    locales: isDeployPreview
+      ? // Deploy preview: keep it fast!
+        ['en']
+      : isI18nStaging
       ? // Staging locales: https://docusaurus-i18n-staging.netlify.app/
         ['en', 'ja']
       : // Production locales