diff --git a/runtime/doc/if_lua.txt b/runtime/doc/if_lua.txt
index 63ee91a..e779d0a 100644
--- a/runtime/doc/if_lua.txt
+++ b/runtime/doc/if_lua.txt
@@ -1,4 +1,4 @@
-*if_lua.txt*    For Vim version 9.0.  Last change: 2021 Aug 06
+*if_lua.txt*    For Vim version 9.1.  Last change: 2021 Aug 06
 
 
 		  VIM REFERENCE MANUAL    by Luis Carvalho