diff --git a/docs/index.txt b/docs/index.txt
index 5946146533e84317b05c1422eaa38220c3749830..355ed5ede472884f8025196d40043e971302d8bd 100644
--- a/docs/index.txt
+++ b/docs/index.txt
@@ -2,6 +2,7 @@ SimpleSAMLphp Documentation
 ===========================
 
  * [Installing simpleSAMLphp](simplesamlphp-install)
+    * [Upgrade notes for version 1.9](simplesamlphp-upgrade-notes-1.9)
     * [Upgrade notes for version 1.8](simplesamlphp-upgrade-notes-1.8)
     * [Upgrade notes for version 1.7](simplesamlphp-upgrade-notes-1.7)
     * [Upgrade notes for version 1.6](simplesamlphp-upgrade-notes-1.6)