diff --git a/docs/reference/config.rst b/docs/reference/config.rst
index dbc009a18..5fef62d86 100644
--- a/docs/reference/config.rst
+++ b/docs/reference/config.rst
@@ -536,6 +536,20 @@ the penalty name to the ``ignored`` setting::
 
 The available penalties are the same as those for the :ref:`max_rec` setting.
 
+.. _required:
+
+required
+~~~~~~~~
+
+You can also avoid matches that doesn't meet a required tag criteria.
+
+Just add the tags you want to enforce to the ``required`` setting::
+
+    match:
+        required: year label catalognum country
+
+No tag are required by default.
+
 .. _path-format-config:
 
 Path Format Configuration