diff --git a/index.html b/index.html
index a7c4479..c5b3c63 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,9 @@
 body {
 	background-color: #FDFDF1;
 }
+footer a {
+	font-weight: bold;
+}
 </style>
 <body>
 
@@ -63,6 +66,8 @@ <h1 class="text-center">Nums123 (beta)</h1>
 	<button id="btn-teach-more" type="button" class="Button Button--tertiary Button--medium mr-200 mb-200" role="button" data-nums123-value="0, 10, 100, 1000, 10000, 100000, 1000000, 1000000000, 1000000000000">Teach me more</button>
 </div>
 
+<footer class="text-center mt-800 mb-800"><p>Made by <a href="https://www.linkedin.com/in/hassman/">Martin Hassman</a>. <a href="https://github.com/met/nums123">Source code</a> available (MIT License).</p></footer>
+
 <script type="text/javascript">
 "use strict";
 let voices;
