diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82d89f209411..802e8f61a14c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ IMPROVEMENTS:
 
 * authentication: adding support for Managed Service Identity [GH-639]
 * `azurerm_container_group` - added `dns_name_label` and `FQDN` properties [GH-877]
+* `azurerm_network_security_group` - support for augmented security rules [GH-781]
 * `azurerm_servicebus_subscription` - added support for the `forward_to` property [GH-861]
 * `azurerm_storage_account` - adding support for `account_kind` being `StorageV2` [GH-851]
 * `azurerm_virtual_network_gateway_connection` - support for IPsec/IKE Policies [GH-834]