diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 6f4b5d7..1b012b7 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt*     For Vim version 9.0.  Last change: 2023 Jan 09
+*index.txt*     For Vim version 9.1.  Last change: 2023 Jan 09
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar