diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 5d6db23..1896d4b 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -3,7 +3,7 @@
 " Maintainer:	Hirohito Higashi <h.east.727 ATMARK gmail.com>
 " 	Doug Kearns <dougkearns@gmail.com>
 " URL:	https://github.com/vim-jp/syntax-vim-ex
-" Last Change:	2024 Mar 09
+" Last Change:	2024 Mar 10
 " Former Maintainer: Charles E. Campbell
 " Base File URL:     http://www.drchip.org/astronaut/vim/index.html#SYNTAX_VIM
 " Base File Version: 9.0-25
@@ -195,13 +195,14 @@
 
 " Numbers {{{2
 " =======
-syn match vimNumber	'\<\d\+\%(\.\d\+\%([eE][+-]\=\d\+\)\=\)\=' skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'-\d\+\%(\.\d\+\%([eE][+-]\=\d\+\)\=\)\='  skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'\<0[xX]\x\+'		       skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'\%(^\|\A\)\zs#\x\{6}'             	       skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'\<0[zZ][a-zA-Z0-9.]\+'                    skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'0[0-7]\+'		       skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
-syn match vimNumber	'0[bB][01]\+'		       skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn case ignore
+syn match	vimNumber	'\<\d\+\%(\.\d\+\%(e[+-]\=\d\+\)\=\)\='	skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn match	vimNumber	'\<0b[01]\+'			skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn match	vimNumber	'\<0o\=\o\+'			skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn match	vimNumber	'\<0x\x\+'			skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn match	vimNumber	'\<0z\%(\x\x\)\+\%(\.\%(\x\x\)\+\)*'	skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn match	vimNumber	'\%(^\|\A\)\zs#\x\{6}'		skipwhite nextgroup=vimGlobal,vimSubst1,vimCommand,vimComment,vim9Comment
+syn case match
 
 " All vimCommands are contained by vimIsCommand. {{{2
 syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimEcho,vimEchoHL,vimExecute,vimIsCommand,vimExtCmd,vimFunction,vimGlobal,vimHighlight,vimLet,vimMap,vimMark,vimNotFunc,vimNorm,vimSet,vimSyntax,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate