diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index c2eac809be..8a26efad59 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1934,6 +1934,20 @@
+
+ spdx.bbclass
+
+
+ The spdx class integrates real-time license
+ scanning, generation of SPDX standard output, and verification
+ of license information during the build.
+
+ This class is currently at the prototype stage in the 1.5
+ release.
+
+
+
+