diff --git a/doc/board/index.rst b/doc/board/index.rst
index 8588e45..aa397ab 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -22,6 +22,7 @@
    openpiton/index
    qualcomm/index
    rockchip/index
+   siemens/index
    sifive/index
    sipeed/index
    socionext/index