diff --git a/runtime/doc/os_msdos.txt b/runtime/doc/os_msdos.txt
index 67821ed..d6d67f0 100644
--- a/runtime/doc/os_msdos.txt
+++ b/runtime/doc/os_msdos.txt
@@ -1,4 +1,4 @@
-*os_msdos.txt*  For Vim version 9.0.  Last change: 2016 Feb 26
+*os_msdos.txt*  For Vim version 9.1.  Last change: 2016 Feb 26
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar