diff --git a/index.html b/index.html
index 48102ba..563e558 100644
--- a/index.html
+++ b/index.html
@@ -6,16 +6,16 @@
   <meta http-equiv="Content-Style-Type" content="text/css" />
   <meta name="generator" content="pandoc" />
   <meta name="author" content="Dainius Masiliūnas and Jan Verbesselt" />
-  <meta name="date" content="2024-09-20" />
+  <meta name="date" content="2025-08-25" />
   <title>Project Introduction</title>
   <style type="text/css">
-    code{white-space: pre-wrap;}
-    span.smallcaps{font-variant: small-caps;}
-    span.underline{text-decoration: underline;}
-    div.column{display: inline-block; vertical-align: top; width: 50%;}
-    div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
-    ul.task-list{list-style: none;}
-              </style>
+code{white-space: pre-wrap;}
+span.smallcaps{font-variant: small-caps;}
+span.underline{text-decoration: underline;}
+div.column{display: inline-block; vertical-align: top; width: 50%;}
+div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
+ul.task-list{list-style: none;}
+</style>
   <script>// Pandoc 2.9 adds attributes on both header and div. We remove the former (to
 // be compatible with the behavior of Pandoc < 2.8).
 document.addEventListener('DOMContentLoaded', function(e) {
@@ -398,7 +398,7 @@ <h1 class="title">Project Introduction</h1>
   <p class="author">
 Dainius Masiliūnas and Jan Verbesselt
   </p>
-  <p class="date">2024-09-20</p>
+  <p class="date">2025-08-25</p>
 </div>
 <div id="the-geo-challenge" class="slide section level2">
 <h1>The geo-challenge</h1>