diff --git a/sphinxcontrib/googleanalytics.py b/sphinxcontrib/googleanalytics.py
index 81b16d8..d655ffd 100644
--- a/sphinxcontrib/googleanalytics.py
+++ b/sphinxcontrib/googleanalytics.py
@@ -8,18 +8,18 @@ def add_ga_javascript(app, pagename, templatename, context, doctree):
         return
 
     metatags = context.get('metatags', '')
-    metatags += """<script type="text/javascript">
+    metatags += """
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={0}"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){{dataLayer.push(arguments);}}
+  gtag('js', new Date());
 
-      var _gaq = _gaq || [];
-      _gaq.push(['_setAccount', '%s']);
-      _gaq.push(['_trackPageview']);
-
-      (function() {
-        var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
-        ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
-        var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
-      })();
-    </script>""" % app.config.googleanalytics_id
+  gtag('config', '{0}');
+</script>
+    
+    """.format(app.config.googleanalytics_id)
     context['metatags'] = metatags
 
 def check_config(app):