diff --git a/runtime/doc/sponsor.txt b/runtime/doc/sponsor.txt
index 548cde8..86da892 100644
--- a/runtime/doc/sponsor.txt
+++ b/runtime/doc/sponsor.txt
@@ -1,4 +1,4 @@
-*sponsor.txt*   For Vim version 9.0.  Last change: 2023 Mar 24
+*sponsor.txt*   For Vim version 9.1.  Last change: 2023 Mar 24
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar