diff --git a/src/index.njk b/src/index.njk
index bebf31a..eec1d0e 100644
--- a/src/index.njk
+++ b/src/index.njk
@@ -1,6 +1,6 @@
 <!-- Version: {{ build.git_reference }} -->
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
@@ -39,4 +39,4 @@
     </div>
     #}
 </body>
-</html>
\ No newline at end of file
+</html>
