diff --git a/README.md b/README.md
index 9df0f0ad..d6240dc2 100644
--- a/README.md
+++ b/README.md
@@ -376,7 +376,8 @@ function sendToGoogleAnalytics({name, delta, id}) {
     // OPTIONAL: any additional attribution params here.
     // See: https://web.dev/debug-web-vitals-in-the-field/
     // metric_rating: 'good' | 'ni' | 'poor',
-    // debug_info: '...',
+    // dimension1: '...',
+    // dimension2: '...',
     // ...
   });
 }