diff --git a/website/docs/r/app_service.html.markdown b/website/docs/r/app_service.html.markdown
index 10a10d36e6176..cde0613a608ec 100644
--- a/website/docs/r/app_service.html.markdown
+++ b/website/docs/r/app_service.html.markdown
@@ -189,6 +189,8 @@ The following arguments are supported:
* `websockets_enabled` - (Optional) Should WebSockets be enabled?
+* `cors` - (Optional) CORS settings
+
---
`ip_restriction` supports the following:
@@ -241,6 +243,12 @@ The following attributes are exported:
* `repo_url` - URL of the Git repository for this App Service.
* `branch` - Branch name of the Git repository for this App Service.
+---
+
+`cors` supports the following:
+
+* `allowed_origins` - (Required) List of allowed origins
+
## Import
App Services can be imported using the `resource id`, e.g.