diff --git a/docs/astro.config.mjs b/docs/astro.config.mjs
index fb775044061..b96e4c93ac1 100644
--- a/docs/astro.config.mjs
+++ b/docs/astro.config.mjs
@@ -56,6 +56,17 @@ export default defineConfig({
 		starlight({
 			title: 'GitHub Agentic Workflows',
 			description: 'Write agentic workflows in natural language using markdown files and run them as GitHub Actions workflows.',
+			defaultLocale: 'root',
+			locales: {
+				root: {
+					label: 'English',
+					lang: 'en',
+				},
+				fr: {
+					label: 'Français',
+					lang: 'fr',
+				},
+			},
 			favicon: '/favicon.svg',
 			logo: {
 				src: './src/assets/agentic-workflow.svg',