diff --git a/docs/index.html b/docs/index.html
index 7c263185a..3f3c0ed0f 100755
--- a/docs/index.html
+++ b/docs/index.html
@@ -3,6 +3,16 @@
 <!DOCTYPE html>
 <html class="writer-html5" lang="en" >
 <head>
+  <!-- Global site tag (gtag.js) - Google Analytics -->
+  <script async src="https://www.googletagmanager.com/gtag/js?id=UA-192769708-1"></script>
+  <script>
+    window.dataLayer = window.dataLayer || [];
+    function gtag(){dataLayer.push(arguments);}
+    gtag('js', new Date());
+
+    gtag('config', 'UA-192769708-1');
+  </script>
+
   <meta charset="utf-8">
   
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
@@ -259,4 +269,4 @@ <h1>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Pe
    
 
 </body>
-</html>
\ No newline at end of file
+</html>
