diff --git a/index.html b/index.html
index 668b21bba4fc4dbed23c6a6ebf47e67e0f6d04f7..b7654cc10a16c3d65b78bf2161751e4a7ee88f5f 100644
--- a/index.html
+++ b/index.html
@@ -1,5 +1,5 @@
<!DOCTYPE html>
-<html>
+<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">