diff --git a/docs/reference/libmm-glib/libmm-glib-docs.xml b/docs/reference/libmm-glib/libmm-glib-docs.xml
index 9953d552..721b2c4d 100644
--- a/docs/reference/libmm-glib/libmm-glib-docs.xml
+++ b/docs/reference/libmm-glib/libmm-glib-docs.xml
@@ -325,6 +325,10 @@
     <title>Index of new symbols in 1.18</title>
     <xi:include href="xml/api-index-1.18.xml"></xi:include>
   </chapter>
+  <chapter id="api-index-1-20" role="1.20">
+    <title>Index of new symbols in 1.20</title>
+    <xi:include href="xml/api-index-1.20.xml"></xi:include>
+  </chapter>
 
   <xi:include href="xml/annotation-glossary.xml"></xi:include>
 </book>