diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 1b56bff03e..42dbb5bd88 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -1561,6 +1561,15 @@
     </para>
 </section>
 
+<section id='ref-classes-python-dir'>
+    <title><filename>python-dir.bbclass</filename></title>
+
+    <para>
+        The <filename>python-dir</filename> class provides the base version,
+        location, and site package location for Python.
+    </para>
+</section>
+
 <section id='ref-classes-distutils'>
     <title>Python Extensions - <filename>distutils.bbclass</filename></title>