diff --git a/index.rst b/index.rst
index f8825b0..4fe50e4 100644
--- a/index.rst
+++ b/index.rst
@@ -71,6 +71,7 @@
    configuration/config_simapp.rst
    configuration/application_filtering.rst
    configuration/qos_config.rst
+   configuration/config_upf.rst
 
 .. toctree::
    :maxdepth: 2