diff --git a/runtime/doc/os_os2.txt b/runtime/doc/os_os2.txt
index a07767e..bd24d13 100644
--- a/runtime/doc/os_os2.txt
+++ b/runtime/doc/os_os2.txt
@@ -1,4 +1,4 @@
-*os_os2.txt*    For Vim version 9.0.  Last change: 2015 Dec 31
+*os_os2.txt*    For Vim version 9.1.  Last change: 2015 Dec 31
 
 
 		  VIM REFERENCE MANUAL    by Paul Slootman