diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 3021401..52714da 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.1.  Last change: 2024 Jul 16
+*options.txt*	For Vim version 9.1.  Last change: 2024 Jul 24
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -76,7 +76,8 @@
 :se[t] {option}:{value}
 			Set string or number option to {value}.
 			For numeric options the value can be given in decimal,
-			hex (preceded with 0x) or octal (preceded with '0').
+			hex (preceded with 0x) or octal (preceded with '0' or
+			'0o').
 			The old value can be inserted by typing 'wildchar' (by
 			default this is a <Tab> or CTRL-E if 'compatible' is
 			set). Many string options with fixed syntax and names