diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98d04caa1465..1dea02a7c86d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ IMPROVEMENTS:
 * kusto: updating to API version `2019-05-15` [GH-4376]
 * `azurerm_analysis_services_server` - support for `backup_blob_container_uri` and `server_full_name` [GH-4397]
 * `azurerm_api_management_api` - deprecate `sku` in favour of the `sku_name` property [GH-3154]
+* `azurerm_function_app` - changes to `app_service_plan_id` no longer force a new resource [GH-4439]
 * `azurerm_eventhub_namespace` - support for the `network_rulesets` property [GH-4409]
 * `azurerm_servicebus_namespace` - support for `zone_redundant` [GH-4432]