diff --git a/helpers.md b/helpers.md
index e48d891d14f..fc0fbfa3922 100644
--- a/helpers.md
+++ b/helpers.md
@@ -2414,4 +2414,16 @@ Sleep::whenFakingSleep(function (Duration $duration) {
 });
 ```
 
+As progressing time is a common requirement, the `fake` method accepts a `syncWithCarbon` argument to keep Carbon in sync when sleeping within a test:
+
+```php
+Sleep::fake(syncWithCarbon: true);
+
+$start = now();
+
+Sleep::for(1)->second();
+
+$start->diffForHumans(); // 1 second ago
+```
+
 Laravel uses the `Sleep` class internally whenever it is pausing execution. For example, the [`retry`](#method-retry) helper uses the `Sleep` class when sleeping, allowing for improved testability when using that helper.