diff --git a/todo/index.html b/todo/index.html
index fecd693c..3567d2cd 100644
--- a/todo/index.html
+++ b/todo/index.html
@@ -1,3 +1,4 @@
+<html lang="en">
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 <script
   data-goatcounter="https://todepond.goatcounter.com/count"
@@ -60,3 +61,4 @@
 
   loadItems();
 </script>
+</html>
