diff --git a/runtime/doc/os_risc.txt b/runtime/doc/os_risc.txt
index 92af8cd..dad3549 100644
--- a/runtime/doc/os_risc.txt
+++ b/runtime/doc/os_risc.txt
@@ -1,4 +1,4 @@
-*os_risc.txt*   For Vim version 9.0.  Last change: 2011 May 10
+*os_risc.txt*   For Vim version 9.1.  Last change: 2011 May 10
 
 
 		  VIM REFERENCE MANUAL    by Thomas Leonard