diff --git a/index.html b/index.html
index c457c8f..40f10dd 100644
--- a/index.html
+++ b/index.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
   <title>Reactive Design Patterns — </title>
   <meta charset="utf-8">
@@ -91,7 +91,7 @@ <h2 id="praise">Praise</h2>
   </div>
   <hr/>
   <div class="container footer">
-    <div class="col-md-6">Copyright &copy;2019 Roland Kuhn</div>
+    <div class="col-md-6">Copyright &copy;2020 Roland Kuhn</div>
     <div class="col-md-6 text-right"><a href="impressum.html">Impressum</a></div>
   </div>
 </body>
