diff --git a/index.rst b/index.rst
index 02e7a20191a8a279fd9e2bb54cd00a2188833502..72c77462e3b0fcb48932daec6f36bbfacccb4da8 100644
--- a/index.rst
+++ b/index.rst
@@ -73,6 +73,7 @@ daily life.
    meta-openharmony/supported-technologies/openharmony
    oniro/supported-technologies/openthread
    oniro/supported-technologies/containers
+   oniro/supported-technologies/modbus
 
 .. toctree::
    :caption: Supported Toolchains