diff --git a/docs/config/theme-configs.md b/docs/config/theme-configs.md
index 37564b78..4ebfdc87 100644
--- a/docs/config/theme-configs.md
+++ b/docs/config/theme-configs.md
@@ -83,6 +83,7 @@ type NavItemWithLink = {
 interface NavItemWithChildren {
   text?: string
   items: NavItemWithLink[]
+  activeMatch?: string
 }
 ```