diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 69604e9..c277923 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -41543,6 +41543,8 @@
 
 Support for Wayland UI.
 
+Support for the XDG Desktop Specification |xdg-base-dir|
+
 Vim9 script
 -----------
 Add support for internal builtin functions with vim9 objects, see