diff --git a/404.html b/404.html
index b69c902..4e08cfb 100755
--- a/404.html
+++ b/404.html
@@ -26,6 +26,9 @@
         <meta name="robots" content="none">
         <link rel="canonical" href="https://www.lermer.nl">
         
+        <!--- Mastodon-->
+        <link rel="me" href="https://mastodon.lermer.nl/@mathijs" />
+        
         <!--- Open Graph Meta Tags -->
         <meta property="og:site_name" content="Mathijs Ronald Lermer">
         <meta property="og:title" content="404">
@@ -34,7 +37,7 @@
         <meta property="og:url" content="https://www.lermer.nl">
         <meta property="og:image" content="https://www.lermer.nl/assets/afb/logo_320x254.png">
 
-        <!-- Twitter Meta Tags -->
+        <!-- X Meta Tags -->
         <meta name="twitter:title" content="Mathijs Ronald Lermer">
         <meta name="twitter:description" content="Not the page you are looking for">
         <meta name="twitter:card" content="summary_large_image">
diff --git a/contact.html b/contact.html
index e4db618..5491a3a 100755
--- a/contact.html
+++ b/contact.html
@@ -25,6 +25,9 @@
         <meta name="description" content="Website van Mathijs Ronald Lermer">
         <meta name="robots" content="all">
         <link rel="canonical" href="https://www.lermer.nl">
+
+        <!--- Mastodon-->
+        <link rel="me" href="https://mastodon.lermer.nl/@mathijs" />
         
         <!-- IE 10+ "Metro" Tiles -->
         <meta name="msapplication-TileColor" content="#056605">
@@ -38,7 +41,7 @@
         <meta property="og:url" content="https://www.lermer.nl">
         <meta property="og:image" content="https://www.lermer.nl/assets/afb/logo_320x254.png">
 
-        <!-- Twitter Meta Tags -->
+        <!-- X Meta Tags -->
         <meta name="twitter:title" content="Mathijs Ronald Lermer">
         <meta name="twitter:description" content="Website van Mathijs Ronald Lermer">
         <meta name="twitter:card" content="summary_large_image">
diff --git a/index.html b/index.html
index 5ffc7f7..b15527f 100755
--- a/index.html
+++ b/index.html
@@ -25,7 +25,10 @@
         <meta name="description" content="Website van Mathijs Ronald Lermer">
         <meta name="robots" content="all">
         <link rel="canonical" href="https://www.lermer.nl">
-        
+
+        <!--- Mastodon-->
+        <link rel="me" href="https://mastodon.lermer.nl/@mathijs" />
+
         <!-- IE 10+ "Metro" Tiles -->
         <meta name="msapplication-TileColor" content="#056605">
         <meta name="msapplication-TileImage" content="assets/afb/MRL-Logo_150.png">
@@ -38,7 +41,7 @@
         <meta property="og:url" content="https://www.lermer.nl">
         <meta property="og:image" content="https://www.lermer.nl/assets/afb/logo_320x254.png">
 
-        <!-- Twitter Meta Tags -->
+        <!-- X Meta Tags -->
         <meta name="twitter:title" content="Mathijs Ronald Lermer">
         <meta name="twitter:description" content="Website van Mathijs Ronald Lermer">
         <meta name="twitter:card" content="summary_large_image">
diff --git a/sitemap.xml b/sitemap.xml
index 951f7cb..0160be4 100755
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -7,12 +7,12 @@
 
 <url>
   <loc>https://www.lermer.nl/</loc>
-  <lastmod>2023-12-19T20:20:00+00:00</lastmod>
+  <lastmod>2023-12-29T23:28:00+00:00</lastmod>
   <priority>1.00</priority>
 </url>
 <url>
   <loc>https://www.lermer.nl/contact</loc>
-  <lastmod>2023-12-19T20:20:00+00:00</lastmod>
+  <lastmod>2023-12-29T23:28:00+00:00</lastmod>
   <priority>0.60</priority>
 </url>
 <url>