diff --git a/runtime/doc/sign.txt b/runtime/doc/sign.txt
index d9bfed6..02240f0 100644
--- a/runtime/doc/sign.txt
+++ b/runtime/doc/sign.txt
@@ -1,4 +1,4 @@
-*sign.txt*      For Vim version 9.0.  Last change: 2023 Feb 21
+*sign.txt*      For Vim version 9.1.  Last change: 2023 Feb 21
 
 
 		  VIM REFERENCE MANUAL    by Gordon Prieur