diff --git a/documentation/ref-manual/classes.rst b/documentation/ref-manual/classes.rst
index 50dbb5a3a6..21b50f94bd 100644
--- a/documentation/ref-manual/classes.rst
+++ b/documentation/ref-manual/classes.rst
@@ -368,6 +368,14 @@ authors used.
 Both build methods inherit the ``cpan-base`` class for basic Perl
 support.
 
+.. _ref-classes-create-spdx:
+
+``create-spdx.bbclass``
+=======================
+
+The ``create-spdx`` class provides support for automatically creating
+SPDX SBoM documents based upon image and SDK contents.
+
 .. _ref-classes-cross:
 
 ``cross.bbclass``