diff --git a/docs/index.txt b/docs/index.txt
index 4f392e67613bc7daa45ae83a1e2f120a6e218650..89d85a19b5b94695fd2d67413db662227bea1d6a 100644
--- a/docs/index.txt
+++ b/docs/index.txt
@@ -2,6 +2,7 @@ SimpleSAMLphp Documentation
 ===========================
 
  * [Installing simpleSAMLphp](simplesamlphp-install)
+    * [Upgrade notes for version 1.13](simplesamlphp-upgrade-notes-1.13)
     * [Upgrade notes for version 1.12](simplesamlphp-upgrade-notes-1.12)
     * [Upgrade notes for version 1.11](simplesamlphp-upgrade-notes-1.11)
     * [Upgrade notes for version 1.10](simplesamlphp-upgrade-notes-1.10)