diff --git a/Documentation/index.rst b/Documentation/index.rst
index 71a276f..dacc77b 100644
--- a/Documentation/index.rst
+++ b/Documentation/index.rst
@@ -13,6 +13,7 @@
 .. toctree::
    :maxdepth: 2
 
+   gpu/index
 
 Indices and tables
 ==================