diff --git a/runtime/doc/if_ruby.txt b/runtime/doc/if_ruby.txt
index caecc6d..6a01568 100644
--- a/runtime/doc/if_ruby.txt
+++ b/runtime/doc/if_ruby.txt
@@ -1,4 +1,4 @@
-*if_ruby.txt*   For Vim version 9.0.  Last change: 2019 Jul 21
+*if_ruby.txt*   For Vim version 9.1.  Last change: 2019 Jul 21
 
 
 		  VIM REFERENCE MANUAL    by Shugo Maeda