diff --git a/public/openapi/read/config.yaml b/public/openapi/read/config.yaml
index 5d1307a271..8643937eae 100644
--- a/public/openapi/read/config.yaml
+++ b/public/openapi/read/config.yaml
@@ -25,6 +25,8 @@ get:
                 type: string
               showSiteTitle:
                 type: boolean
+              maintenanceMode:
+                type: boolean
               minimumTitleLength:
                 type: number
               maximumTitleLength: