diff --git a/client/src/main.ts b/client/src/main.ts
index ec16e9d..fda901e 100644
--- a/client/src/main.ts
+++ b/client/src/main.ts
@@ -146,6 +146,8 @@ loadServerConfig()
       })
     }
 
+    document.documentElement.lang = currentLanguage.split('_')[0]
+
     app.use(router)
 
     app.mount('#app')