From 7d882cef5f2e74214ac08156818e44bcefb85556 Mon Sep 17 00:00:00 2001
From: "Nolann B." <100787331+nolannbiron@users.noreply.github.com>
Date: Fri, 3 Apr 2026 17:31:37 +0200
Subject: [PATCH] Fix HTML lang attribute not reflecting site language variants
 (#4161)

---
 packages/gitbook/src/lib/context.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/gitbook/src/lib/context.ts b/packages/gitbook/src/lib/context.ts
index 6137a8a98..0090290ff 100644
--- a/packages/gitbook/src/lib/context.ts
+++ b/packages/gitbook/src/lib/context.ts
@@ -355,6 +355,7 @@ export async function fetchSiteContextByIds(
 
     return {
         ...spaceContext,
+        locale: siteSpace.space.language ?? spaceContext.locale,
         linker: site.urls.published
             ? linkerForPublishedURL(spaceContext.linker, site.urls.published)
             : spaceContext.linker,