diff --git a/docs/index.md b/docs/index.md
index c7df4fe4c5a74be5e098793e0c0d077e6c55239d..b31fffb7463335b207a9eb5e03e6c488dd28228e 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -2,6 +2,7 @@ SimpleSAMLphp Documentation
 ===========================
 
  * [Installing SimpleSAMLphp](simplesamlphp-install)
+    * [Upgrade notes for version 1.18](simplesamlphp-upgrade-notes-1.18)
     * [Upgrade notes for version 1.17](simplesamlphp-upgrade-notes-1.17)
     * [Upgrade notes for version 1.16](simplesamlphp-upgrade-notes-1.16)
     * [Upgrade notes for version 1.15](simplesamlphp-upgrade-notes-1.15)