diff --git a/docs/web_api.md b/docs/web_api.md
index aac54a6..d8339fe 100644
--- a/docs/web_api.md
+++ b/docs/web_api.md
@@ -1071,6 +1071,10 @@ Returns: Information about the host system in the following format:
             "klipper_mcu",
             "moonraker"
         ],
+        "instance_ids": {
+            "moonraker": "moonraker",
+            "klipper": "klipper"
+        },
         "service_state": {
             "klipper": {
                 "active_state": "active",