diff --git a/modules/index.rst b/modules/index.rst
index afc2142cfb81f0b06d9c83755207b29523132d7a..89bb6d3614d7c91c7fb9050a1fc9f9ab73deecc3 100644
--- a/modules/index.rst
+++ b/modules/index.rst
@@ -93,6 +93,9 @@ Varia
 
 **Datasets:** :doc:`tabular data <table>`
 
+**File Formats:** :doc:`supported file formats <io/formats>`
+
+
 Extending OpenStructure
 --------------------------------------------------------------------------------
 
@@ -102,4 +105,4 @@ Extending OpenStructure
 
 
 
-  
\ No newline at end of file
+