diff --git a/tpl/tplimpl/embedded/templates/google_analytics_async.html b/tpl/tplimpl/embedded/templates/google_analytics_async.html
index 499cb6fe3..b7bf36faa 100644
--- a/tpl/tplimpl/embedded/templates/google_analytics_async.html
+++ b/tpl/tplimpl/embedded/templates/google_analytics_async.html
@@ -1,3 +1,4 @@
+{{ warnf "_internal/google_analytics_async.html is no longer supported by Google and will be removed in a future version of Hugo" }}
 {{- $pc := .Site.Config.Privacy.GoogleAnalytics -}}
 {{- if not $pc.Disable -}}
 {{ with .Site.GoogleAnalytics }}