diff --git a/app/assets/index.html b/app/assets/index.html
index c3f42b3..f74d05d 100644
--- a/app/assets/index.html
+++ b/app/assets/index.html
@@ -11,6 +11,24 @@
   <script src="assets/js/app.js"></script>
   <script>require('index')</script>
   <link rel="shortcut icon" href="assets/favicon.ico" type="image/x-icon">
+  <!-- Matomo -->
+<script type="text/javascript">
+var _paq = window._paq || [];
+/* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+_paq.push(["setDocumentTitle", document.domain + "/" + document.title]);
+_paq.push(["setCookieDomain", "*.www.crossref.org"]);
+_paq.push(['trackPageView']);
+_paq.push(['enableLinkTracking']);
+(function() {
+var u="https://crossref.matomo.cloud/";
+_paq.push(['setTrackerUrl', u+'matomo.php']);
+_paq.push(['setSiteId', '1']);
+var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+})();
+</script>
+<noscript><p><img src="https://crossref.matomo.cloud/matomo.php?idsite=1&rec=1" style="border:0;" alt="" /></p></noscript>
+<!-- End Matomo Code -->
 </head>
 <body>
   <div id="root"></div>
