diff --git a/404.html b/404.html
index 348985d..f70fef2 100644
--- a/404.html
+++ b/404.html
@@ -35,6 +35,16 @@
       );
 
     </script>
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-120904854-1"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'UA-120904854-1');
+</script>
+
   </head>
   <body>
   </body>
diff --git a/index.html b/index.html
index 8dc8dd7..b1bf101 100644
--- a/index.html
+++ b/index.html
@@ -62,6 +62,15 @@
       }(window.location))
     </script>
 
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-120904854-1"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'UA-120904854-1');
+</script>
 
   </head>
   <body>
