diff --git a/runtime/doc/pi_vimball.txt b/runtime/doc/pi_vimball.txt
index 045c5c4..35d4d7c 100644
--- a/runtime/doc/pi_vimball.txt
+++ b/runtime/doc/pi_vimball.txt
@@ -1,4 +1,4 @@
-*pi_vimball.txt*	For Vim version 9.0.  Last change: 2016 Apr 11
+*pi_vimball.txt*	For Vim version 9.1.  Last change: 2016 Apr 11
 
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