diff --git a/docs/parsers.rst b/docs/parsers.rst
index 5dac7f8..920206e 100644
--- a/docs/parsers.rst
+++ b/docs/parsers.rst
@@ -40,3 +40,12 @@ Standard Delay Format - :mod:`kyupy.sdf`
 
 .. autoclass:: kyupy.sdf.DelayFile
    :members:
+
+Design Exchange Format - :mod:`kyupy.def_file`
+----------------------------------------------
+
+.. automodule:: kyupy.def_file
+   :members: parse, load
+
+.. autoclass:: kyupy.def_file.DefFile
+   :members: