diff --git a/.github/workflows/docs-site-checks.yml b/.github/workflows/docs-site-checks.yml
index cf775f89e0..1e82698218 100644
--- a/.github/workflows/docs-site-checks.yml
+++ b/.github/workflows/docs-site-checks.yml
@@ -49,5 +49,8 @@ jobs:
         working-directory: website
 
       - name: Build Docusaurus
-        run: npm run build
+        # Build only the default (en) locale in CI — the full bilingual
+        # build runs in deploy-site.yml on push-to-main / release.
+        # Same pattern Docusaurus uses internally (build:fast --locale en).
+        run: npm run build:fast
         working-directory: website
diff --git a/website/package.json b/website/package.json
index e3b8477835..1e6d8b1340 100644
--- a/website/package.json
+++ b/website/package.json
@@ -8,6 +8,7 @@
     "start": "docusaurus start",
     "prebuild": "node scripts/prebuild.mjs",
     "build": "docusaurus build",
+    "build:fast": "docusaurus build --locale en",
     "swizzle": "docusaurus swizzle",
     "deploy": "docusaurus deploy",
     "clear": "docusaurus clear",