diff --git a/docs/admin/code_hosts/github.mdx b/docs/admin/code_hosts/github.mdx
index adaeb00e2..a79bdd81e 100644
--- a/docs/admin/code_hosts/github.mdx
+++ b/docs/admin/code_hosts/github.mdx
@@ -66,6 +66,8 @@ To create a GitHub App and connect it to Sourcegraph:
 
 9. (Optional) If you want to sync repositories from other organization or user namespaces and your GitHub App is set to public visibility, you can create additional installations with **Add installation**.
 
+> NOTE: When you create a GitHub App, Sourcegraph automatically sets up an [incoming webhook](/admin/config/webhooks/incoming) for the app. This webhook subscribes to events for any repository or organization the app has access to, allowing Sourcegraph to keep repository and permission data in sync with GitHub.
+
 > NOTE: If you are using [Batch Changes](/batch-changes/), you can create a GitHub App to perform [commit signing](/admin/config/batch_changes#commit-signing-for-github) (Beta).
 
 ### Multiple installations