diff --git a/themes/gohugoioTheme/layouts/partials/gtag.html b/themes/gohugoioTheme/layouts/partials/gtag.html
index b89f2feb1..bd3bdbd6e 100644
--- a/themes/gohugoioTheme/layouts/partials/gtag.html
+++ b/themes/gohugoioTheme/layouts/partials/gtag.html
@@ -5,7 +5,7 @@
   function gtag(){dataLayer.push(arguments);}
   gtag('js', new Date());
 
-  gtag('config', '{{ . }}');
+  gtag('config', '{{ . }}', {'branch': '{{ getenv "BRANCH" }}'});
 
 /**
 * Function that tracks a click on an outbound link in Analytics.