diff --git a/source/_integrations/persistent_notification.markdown b/source/_integrations/persistent_notification.markdown
index ec0ce71eeee2..0aabbbdd8df1 100644
--- a/source/_integrations/persistent_notification.markdown
+++ b/source/_integrations/persistent_notification.markdown
@@ -68,6 +68,13 @@ action:
     notification_id: "1234"
 ```
 
+The service `persistent_notification.dismiss_all` allows you to remove all notifications.
+
+```yaml
+action:
+  service: persistent_notification.dismiss_all
+```
+
 ### Markdown support
 
 The message attribute supports the [Markdown formatting syntax](https://daringfireball.net/projects/markdown/syntax). Some examples are: